21462210242 has 16 divisors (see below), whose sum is σ = 35174284992. Its totient is φ = 9740465520.

The previous prime is 21462210233. The next prime is 21462210307. The reversal of 21462210242 is 24201226412.

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, 739673 + ... + 768140.

It is an arithmetic number, because the mean of its divisors is an integer number (2198392812).

Almost surely, 2^21462210242 is an apocalyptic number.

21462210242 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21462210242 is a deficient number, since it is larger than the sum of its proper divisors (13712074750).

21462210242 is a wasteful number, since it uses less digits than its factorization.

21462210242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1508473.

The product of its (nonzero) digits is 3072, while the sum is 26.

Adding to 21462210242 its reverse (24201226412), we get a palindrome (45663436654).

The spelling of 21462210242 in words is "twenty-one billion, four hundred sixty-two million, two hundred ten thousand, two hundred forty-two".