42541403634 has 20 divisors (see below), whose sum is σ = 95324256654. Its totient is φ = 14180467824.

The previous prime is 42541403563. The next prime is 42541403647. The reversal of 42541403634 is 43630414524.

42541403634 is a `hidden beast` number, since 4 + 2 + 5 + 4 + 14 + 0 + 3 + 634 = 666.

It can be written as a sum of positive squares in only one way, i.e., 35663189409 + 6878214225 = 188847^2 + 82935^2 .

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon 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, 131300467 + ... + 131300790.

Almost surely, 2^42541403634 is an apocalyptic number.

42541403634 is an abundant number, since it is smaller than the sum of its proper divisors (52782853020).

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

42541403634 is a wasteful number, since it uses less digits than its factorization.

42541403634 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 262601271 (or 262601262 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 36.

The spelling of 42541403634 in words is "forty-two billion, five hundred forty-one million, four hundred three thousand, six hundred thirty-four".