21410402140 has 48 divisors (see below), whose sum is σ = 48258860832. Its totient is φ = 7949961216.

The previous prime is 21410402107. The next prime is 21410402161. The reversal of 21410402140 is 4120401412.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 406494 + ... + 456133.

It is an arithmetic number, because the mean of its divisors is an integer number (1005392934).

Almost surely, 2^21410402140 is an apocalyptic number.

21410402140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21410402140 is an abundant number, since it is smaller than the sum of its proper divisors (26848458692).

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

21410402140 is a wasteful number, since it uses less digits than its factorization.

21410402140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 862726 (or 862724 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 19.

Adding to 21410402140 its reverse (4120401412), we get a palindrome (25530803552).

The spelling of 21410402140 in words is "twenty-one billion, four hundred ten million, four hundred two thousand, one hundred forty".