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145270141 = 233623477
BaseRepresentation
bin10001010100010…
…10010101111101
3101010100111011121
420222022111331
5244142121031
622225350541
73412530052
oct1052122575
9333314147
10145270141
1175001675
1240798451
1324134083
1415417029
15cb48011
hex8a8a57d

145270141 has 4 divisors (see below), whose sum is σ = 145893852. Its totient is φ = 144646432.

The previous prime is 145270133. The next prime is 145270159. The reversal of 145270141 is 141072541.

145270141 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 33524100 + 111746041 = 5790^2 + 10571^2 .

It is a cyclic number.

It is not a de Polignac number, because 145270141 - 23 = 145270133 is a prime.

It is a super-2 number, since 2×1452701412 = 42206827732319762, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145270121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 311506 + ... + 311971.

It is an arithmetic number, because the mean of its divisors is an integer number (36473463).

Almost surely, 2145270141 is an apocalyptic number.

It is an amenable number.

145270141 is a deficient number, since it is larger than the sum of its proper divisors (623711).

145270141 is an equidigital number, since it uses as much as digits as its factorization.

145270141 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 623710.

The product of its (nonzero) digits is 1120, while the sum is 25.

The square root of 145270141 is about 12052.8063537087. The cubic root of 145270141 is about 525.6848399031.

The spelling of 145270141 in words is "one hundred forty-five million, two hundred seventy thousand, one hundred forty-one".

Divisors: 1 233 623477 145270141