21410211042 has 24 divisors (see below), whose sum is σ = 50605953840. Its totient is φ = 6487942680.

The previous prime is 21410211019. The next prime is 21410211071. The reversal of 21410211042 is 24011201412.

21410211042 is a `hidden beast` number, since 2 + 1 + 410 + 211 + 0 + 42 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54065992 + ... + 54066387.

It is an arithmetic number, because the mean of its divisors is an integer number (2108581410).

Almost surely, 2^21410211042 is an apocalyptic number.

21410211042 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

21410211042 is an abundant number, since it is smaller than the sum of its proper divisors (29195742798).

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

21410211042 is a wasteful number, since it uses less digits than its factorization.

21410211042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108132398 (or 108132395 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 21410211042 its reverse (24011201412), we get a palindrome (45421412454).

The spelling of 21410211042 in words is "twenty-one billion, four hundred ten million, two hundred eleven thousand, forty-two".