21142401004 has 12 divisors (see below), whose sum is σ = 37006115328. Its totient is φ = 10569225200.

The previous prime is 21142400971. The next prime is 21142401017. The reversal of 21142401004 is 40010424112.

It is a super-2 number, since 2×21142401004² (a number of 21 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 469612 + ... + 512659.

It is an arithmetic number, because the mean of its divisors is an integer number (3083842944).

Almost surely, 2^21142401004 is an apocalyptic number.

It is an amenable number.

21142401004 is a deficient number, since it is larger than the sum of its proper divisors (15863714324).

21142401004 is a wasteful number, since it uses less digits than its factorization.

21142401004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 987656 (or 987654 counting only the distinct ones).

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

Adding to 21142401004 its reverse (40010424112), we get a palindrome (61152825116).

The spelling of 21142401004 in words is "twenty-one billion, one hundred forty-two million, four hundred one thousand, four".