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142438014 = 234879247
BaseRepresentation
bin10000111110101…
…10111001111110
3100221000121020000
420133112321332
5242431004024
622044535130
73346463115
oct1037267176
9327017200
10142438014
1173447874
123b8514a6
1323681c64
1414cbac7c
15c788cc9
hex87d6e7e

142438014 has 20 divisors (see below), whose sum is σ = 319167024. Its totient is φ = 47479284.

The previous prime is 142437991. The next prime is 142438033. The reversal of 142438014 is 410834241.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 439462 + ... + 439785.

Almost surely, 2142438014 is an apocalyptic number.

142438014 is an abundant number, since it is smaller than the sum of its proper divisors (176729010).

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

142438014 is an equidigital number, since it uses as much as digits as its factorization.

142438014 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 879261 (or 879252 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 27.

The square root of 142438014 is about 11934.7397960743. The cubic root of 142438014 is about 522.2462175752.

The spelling of 142438014 in words is "one hundred forty-two million, four hundred thirty-eight thousand, fourteen".

Divisors: 1 2 3 6 9 18 27 54 81 162 879247 1758494 2637741 5275482 7913223 15826446 23739669 47479338 71219007 142438014