42502661122 has 4 divisors (see below), whose sum is σ = 63753991686. Its totient is φ = 21251330560.

The previous prime is 42502661107. The next prime is 42502661141. The reversal of 42502661122 is 22116620524.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 27336984921 + 15165676201 = 165339^2 + 123149^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10625665279 + ... + 10625665282.

Almost surely, 2^42502661122 is an apocalyptic number.

42502661122 is a deficient number, since it is larger than the sum of its proper divisors (21251330564).

42502661122 is a wasteful number, since it uses less digits than its factorization.

42502661122 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21251330563.

The product of its (nonzero) digits is 11520, while the sum is 31.

The spelling of 42502661122 in words is "forty-two billion, five hundred two million, six hundred sixty-one thousand, one hundred twenty-two".