21410232442 has 4 divisors (see below), whose sum is σ = 32115348666. Its totient is φ = 10705116220.

The previous prime is 21410232419. The next prime is 21410232511. The reversal of 21410232442 is 24423201412.

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., 17305139401 + 4105093041 = 131549^2 + 64071^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5352558109 + ... + 5352558112.

Almost surely, 2^21410232442 is an apocalyptic number.

21410232442 is a deficient number, since it is larger than the sum of its proper divisors (10705116224).

21410232442 is a wasteful number, since it uses less digits than its factorization.

21410232442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10705116223.

The product of its (nonzero) digits is 3072, while the sum is 25.

Adding to 21410232442 its reverse (24423201412), we get a palindrome (45833433854).

The spelling of 21410232442 in words is "twenty-one billion, four hundred ten million, two hundred thirty-two thousand, four hundred forty-two".