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145270143 = 3219849533
BaseRepresentation
bin10001010100010…
…10010101111111
3101010100111011200
420222022111333
5244142121033
622225350543
73412530054
oct1052122577
9333314150
10145270143
1175001677
1240798453
1324134085
141541702b
15cb48013
hex8a8a57f

145270143 has 12 divisors (see below), whose sum is σ = 220878840. Its totient is φ = 91749456.

The previous prime is 145270133. The next prime is 145270159. The reversal of 145270143 is 341072541.

145270143 is a `hidden beast` number, since 1 + 452 + 70 + 143 = 666.

It is not a de Polignac number, because 145270143 - 210 = 145269119 is a prime.

It is a super-2 number, since 2×1452701432 = 42206828894480898, which contains 22 as substring.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (145270133) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 424596 + ... + 424937.

It is an arithmetic number, because the mean of its divisors is an integer number (18406570).

Almost surely, 2145270143 is an apocalyptic number.

145270143 is a deficient number, since it is larger than the sum of its proper divisors (75608697).

145270143 is a wasteful number, since it uses less digits than its factorization.

145270143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 849558 (or 849555 counting only the distinct ones).

The product of its (nonzero) digits is 3360, while the sum is 27.

The square root of 145270143 is about 12052.8064366769. The cubic root of 145270143 is about 525.6848423155.

The spelling of 145270143 in words is "one hundred forty-five million, two hundred seventy thousand, one hundred forty-three".

Divisors: 1 3 9 19 57 171 849533 2548599 7645797 16141127 48423381 145270143