21003042410 has 16 divisors (see below), whose sum is σ = 43206258816. Its totient is φ = 7201043088.

The previous prime is 21003042397. The next prime is 21003042439. The reversal of 21003042410 is 1424030012.

It is a super-2 number, since 2×21003042410² (a number of 21 digits) contains 22 as substring.

It is a Curzon 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, 150021662 + ... + 150021801.

It is an arithmetic number, because the mean of its divisors is an integer number (2700391176).

Almost surely, 2^21003042410 is an apocalyptic number.

21003042410 is an abundant number, since it is smaller than the sum of its proper divisors (22203216406).

21003042410 is a wasteful number, since it uses less digits than its factorization.

21003042410 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300043477.

The product of its (nonzero) digits is 192, while the sum is 17.

Adding to 21003042410 its reverse (1424030012), we get a palindrome (22427072422).

The spelling of 21003042410 in words is "twenty-one billion, three million, forty-two thousand, four hundred ten".