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142672470 = 23518792531
BaseRepresentation
bin10001000000100…
…00001001010110
3100221110111211120
420200100021112
5243011004340
622053544410
73351460503
oct1040201126
9327414746
10142672470
1173597a36
123b945106
13237348a5
1414d3c4aa
15c7d34d0
hex8810256

142672470 has 32 divisors (see below), whose sum is σ = 342731520. Its totient is φ = 38010720.

The previous prime is 142672459. The next prime is 142672471. The reversal of 142672470 is 74276241.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142672471) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 55105 + ... + 57635.

It is an arithmetic number, because the mean of its divisors is an integer number (10710360).

Almost surely, 2142672470 is an apocalyptic number.

142672470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

142672470 is an abundant number, since it is smaller than the sum of its proper divisors (200059050).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

142672470 is a wasteful number, since it uses less digits than its factorization.

142672470 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4420.

The product of its (nonzero) digits is 18816, while the sum is 33.

The square root of 142672470 is about 11944.5581751691. The cubic root of 142672470 is about 522.5326032936.

The spelling of 142672470 in words is "one hundred forty-two million, six hundred seventy-two thousand, four hundred seventy".

Divisors: 1 2 3 5 6 10 15 30 1879 2531 3758 5062 5637 7593 9395 11274 12655 15186 18790 25310 28185 37965 56370 75930 4755749 9511498 14267247 23778745 28534494 47557490 71336235 142672470