21142414104 has 64 divisors (see below), whose sum is σ = 61029696000. Its totient is φ = 5978409984.

The previous prime is 21142414061. The next prime is 21142414159. The reversal of 21142414104 is 40141424112.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 632404 + ... + 664995.

It is an arithmetic number, because the mean of its divisors is an integer number (953589000).

Almost surely, 2^21142414104 is an apocalyptic number.

21142414104 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21142414104 is an abundant number, since it is smaller than the sum of its proper divisors (39887281896).

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

21142414104 is a wasteful number, since it uses less digits than its factorization.

21142414104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1297512 (or 1297508 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 24.

Adding to 21142414104 its reverse (40141424112), we get a palindrome (61283838216).

The spelling of 21142414104 in words is "twenty-one billion, one hundred forty-two million, four hundred fourteen thousand, one hundred four".