21376460242 has 8 divisors (see below), whose sum is σ = 32250035916. Its totient is φ = 10626448272.

The previous prime is 21376460227. The next prime is 21376460243. The reversal of 21376460242 is 24206467312.

It can be written as a sum of positive squares in 2 ways, for example, as 19179757081 + 2196703161 = 138491^2 + 46869^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is not an unprimeable number, because it can be changed into a prime (21376460243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30890493 + ... + 30891184.

Almost surely, 2^21376460242 is an apocalyptic number.

21376460242 is a deficient number, since it is larger than the sum of its proper divisors (10873575674).

21376460242 is a wasteful number, since it uses less digits than its factorization.

21376460242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61781852.

The product of its (nonzero) digits is 96768, while the sum is 37.

The spelling of 21376460242 in words is "twenty-one billion, three hundred seventy-six million, four hundred sixty thousand, two hundred forty-two".