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142485492 = 22311873791
BaseRepresentation
bin10000111111000…
…10011111110100
3100221010000100110
420133202133310
5242434013432
622045543020
73350051412
oct1037423764
9327100313
10142485492
117347a506
123b874a70
132369a756
1414cd02b2
15c797dcc
hex87e27f4

142485492 has 12 divisors (see below), whose sum is σ = 332466176. Its totient is φ = 47495160.

The previous prime is 142485481. The next prime is 142485493. The reversal of 142485492 is 294584241.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 142485492.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142485493) 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, 5936884 + ... + 5936907.

Almost surely, 2142485492 is an apocalyptic number.

142485492 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

142485492 is an abundant number, since it is smaller than the sum of its proper divisors (189980684).

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

142485492 is a wasteful number, since it uses less digits than its factorization.

142485492 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11873798 (or 11873796 counting only the distinct ones).

The product of its digits is 92160, while the sum is 39.

The square root of 142485492 is about 11936.7286975955. The cubic root of 142485492 is about 522.3042368516.

The spelling of 142485492 in words is "one hundred forty-two million, four hundred eighty-five thousand, four hundred ninety-two".

Divisors: 1 2 3 4 6 12 11873791 23747582 35621373 47495164 71242746 142485492