21410423140 has 24 divisors (see below), whose sum is σ = 45033170112. Its totient is φ = 8550591840.

The previous prime is 21410423129. The next prime is 21410423179. The reversal of 21410423140 is 4132401412.

It is a happy number.

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, 835654 + ... + 860893.

It is an arithmetic number, because the mean of its divisors is an integer number (1876382088).

Almost surely, 2^21410423140 is an apocalyptic number.

21410423140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21410423140 is an abundant number, since it is smaller than the sum of its proper divisors (23622746972).

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

21410423140 is a wasteful number, since it uses less digits than its factorization.

21410423140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1697187 (or 1697185 counting only the distinct ones).

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

Adding to 21410423140 its reverse (4132401412), we get a palindrome (25542824552).

The spelling of 21410423140 in words is "twenty-one billion, four hundred ten million, four hundred twenty-three thousand, one hundred forty".