42161406724 has 12 divisors (see below), whose sum is σ = 73784982348. Its totient is φ = 21079983200.

The previous prime is 42161406701. The next prime is 42161406739. The reversal of 42161406724 is 42760416124.

It can be written as a sum of positive squares in 2 ways, for example, as 38193666624 + 3967740100 = 195432^2 + 62990^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35407 + ... + 292534.

It is an arithmetic number, because the mean of its divisors is an integer number (6148748529).

Almost surely, 2^42161406724 is an apocalyptic number.

It is an amenable number.

42161406724 is a deficient number, since it is larger than the sum of its proper divisors (31623575624).

42161406724 is a wasteful number, since it uses less digits than its factorization.

42161406724 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 360086 (or 360084 counting only the distinct ones).

The product of its (nonzero) digits is 64512, while the sum is 37.

The spelling of 42161406724 in words is "forty-two billion, one hundred sixty-one million, four hundred six thousand, seven hundred twenty-four".