402102104204450 has 96 divisors (see below), whose sum is σ = 819818791614144. Its totient is φ = 145831039453440.

The previous prime is 402102104204447. The next prime is 402102104204497. The reversal of 402102104204450 is 54402401201204.

It is a happy number.

It is a super-2 number, since 2×402102104204450² (a number of 30 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1807652 + ... + 28416048.

It is an arithmetic number, because the mean of its divisors is an integer number (8539779079314).

Almost surely, 2^{402102104204450} is an apocalyptic number.

402102104204450 is an abundant number, since it is smaller than the sum of its proper divisors (417716687409694).

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

402102104204450 is a wasteful number, since it uses less digits than its factorization.

402102104204450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26608836 (or 26608831 counting only the distinct ones).

The product of its (nonzero) digits is 10240, while the sum is 29.

Adding to 402102104204450 its reverse (54402401201204), we get a palindrome (456504505405654).

The spelling of 402102104204450 in words is "four hundred two trillion, one hundred two billion, one hundred four million, two hundred four thousand, four hundred fifty".