21410231242 has 16 divisors (see below), whose sum is σ = 32922174600. Its totient is φ = 10436546560.

The previous prime is 21410231209. The next prime is 21410231243. The reversal of 21410231242 is 24213201412.

It can be written as a sum of positive squares in 4 ways, for example, as 10029822201 + 11380409041 = 100149^2 + 106679^2 .

It is not an unprimeable number, because it can be changed into a prime (21410231243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22884 + ... + 208192.

Almost surely, 2^21410231242 is an apocalyptic number.

21410231242 is a deficient number, since it is larger than the sum of its proper divisors (11511943358).

21410231242 is a wasteful number, since it uses less digits than its factorization.

21410231242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 186761.

The product of its (nonzero) digits is 768, while the sum is 22.

Adding to 21410231242 its reverse (24213201412), we get a palindrome (45623432654).

The spelling of 21410231242 in words is "twenty-one billion, four hundred ten million, two hundred thirty-one thousand, two hundred forty-two".