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142492704 = 2531978121
BaseRepresentation
bin10000111111001…
…00010000100000
3100221010101020120
420133210100200
5242434231304
622050040240
73350111424
oct1037442040
9327111216
10142492704
1173484972
123b879080
13236a0b13
1414cd2b84
15c79a0d9
hex87e4420

142492704 has 48 divisors (see below), whose sum is σ = 393734880. Its totient is φ = 44997120.

The previous prime is 142492703. The next prime is 142492711. The reversal of 142492704 is 407294241.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (142492703) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37237 + ... + 40884.

It is an arithmetic number, because the mean of its divisors is an integer number (8202810).

Almost surely, 2142492704 is an apocalyptic number.

It is an amenable number.

142492704 is an abundant number, since it is smaller than the sum of its proper divisors (251242176).

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

142492704 is a wasteful number, since it uses less digits than its factorization.

142492704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 78153 (or 78145 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 33.

The square root of 142492704 is about 11937.0307865901. The cubic root of 142492704 is about 522.3130489642.

The spelling of 142492704 in words is "one hundred forty-two million, four hundred ninety-two thousand, seven hundred four".

Divisors: 1 2 3 4 6 8 12 16 19 24 32 38 48 57 76 96 114 152 228 304 456 608 912 1824 78121 156242 234363 312484 468726 624968 937452 1249936 1484299 1874904 2499872 2968598 3749808 4452897 5937196 7499616 8905794 11874392 17811588 23748784 35623176 47497568 71246352 142492704