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166012542 = 2329222919
BaseRepresentation
bin10011110010100…
…10011001111110
3102120101022101200
421321102121332
5314444400132
624250120330
74054040403
oct1171223176
9376338350
10166012542
1185789753
12477200a6
1328517397
14180962aa
15e893d7c
hex9e5267e

166012542 has 12 divisors (see below), whose sum is σ = 359693880. Its totient is φ = 55337508.

The previous prime is 166012523. The next prime is 166012549. The reversal of 166012542 is 245210661.

166012542 is a `hidden beast` number, since 1 + 6 + 601 + 2 + 54 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (166012549) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4611442 + ... + 4611477.

It is an arithmetic number, because the mean of its divisors is an integer number (29974490).

Almost surely, 2166012542 is an apocalyptic number.

166012542 is an abundant number, since it is smaller than the sum of its proper divisors (193681338).

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

166012542 is a wasteful number, since it uses less digits than its factorization.

166012542 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9222927 (or 9222924 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 166012542 is about 12884.5854415266. The cubic root of 166012542 is about 549.6003068526.

The spelling of 166012542 in words is "one hundred sixty-six million, twelve thousand, five hundred forty-two".

Divisors: 1 2 3 6 9 18 9222919 18445838 27668757 55337514 83006271 166012542