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142153201 = 178361953
BaseRepresentation
bin10000111100100…
…01010111110001
3100220111010112101
420132101113301
5242342400301
622034500401
73344165551
oct1036212761
9326433471
10142153201
1173272893
123b734701
13235b2428
1414c45161
15c72e701
hex87915f1

142153201 has 4 divisors (see below), whose sum is σ = 150515172. Its totient is φ = 133791232.

The previous prime is 142153199. The next prime is 142153213. The reversal of 142153201 is 102351241.

142153201 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, and also an emirpimes, since its reverse is a distinct semiprime: 102351241 = 433236377.

It can be written as a sum of positive squares in 2 ways, for example, as 124344801 + 17808400 = 11151^2 + 4220^2 .

It is a cyclic number.

It is not a de Polignac number, because 142153201 - 21 = 142153199 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142153901) 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, 4180960 + ... + 4180993.

It is an arithmetic number, because the mean of its divisors is an integer number (37628793).

Almost surely, 2142153201 is an apocalyptic number.

It is an amenable number.

142153201 is a deficient number, since it is larger than the sum of its proper divisors (8361971).

142153201 is an equidigital number, since it uses as much as digits as its factorization.

142153201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8361970.

The product of its (nonzero) digits is 240, while the sum is 19.

The square root of 142153201 is about 11922.8017261045. The cubic root of 142153201 is about 521.8978981957.

The spelling of 142153201 in words is "one hundred forty-two million, one hundred fifty-three thousand, two hundred one".

Divisors: 1 17 8361953 142153201