42102687546 has 20 divisors (see below), whose sum is σ = 94341207642. Its totient is φ = 14034229128.

The previous prime is 42102687521. The next prime is 42102687551. The reversal of 42102687546 is 64578620124.

42102687546 is a `hidden beast` number, since 4 + 2 + 1 + 0 + 26 + 87 + 546 = 666.

It can be written as a sum of positive squares in only one way, i.e., 41265453321 + 837234225 = 203139^2 + 28935^2 .

It is a super-2 number, since 2×42102687546² (a number of 22 digits) contains 22 as substring.

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, 129946405 + ... + 129946728.

Almost surely, 2^42102687546 is an apocalyptic number.

42102687546 is an abundant number, since it is smaller than the sum of its proper divisors (52238520096).

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

42102687546 is a wasteful number, since it uses less digits than its factorization.

42102687546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 259893147 (or 259893138 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 45.

The spelling of 42102687546 in words is "forty-two billion, one hundred two million, six hundred eighty-seven thousand, five hundred forty-six".