21241302402 has 16 divisors (see below), whose sum is σ = 42487683552. Its totient is φ = 7079587680.

The previous prime is 21241302367. The next prime is 21241302413. The reversal of 21241302402 is 20420314212.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 156124 + ... + 258567.

It is an arithmetic number, because the mean of its divisors is an integer number (2655480222).

Almost surely, 2^21241302402 is an apocalyptic number.

21241302402 is an abundant number, since it is smaller than the sum of its proper divisors (21246381150).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21241302402 is a wasteful number, since it uses less digits than its factorization.

21241302402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423233.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 21241302402 its reverse (20420314212), we get a palindrome (41661616614).

The spelling of 21241302402 in words is "twenty-one billion, two hundred forty-one million, three hundred two thousand, four hundred two".