421010123402 has 64 divisors (see below), whose sum is σ = 737365420800. Its totient is φ = 178387123200.

The previous prime is 421010123381. The next prime is 421010123411. The reversal of 421010123402 is 204321010124.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3943202 + ... + 4048562.

It is an arithmetic number, because the mean of its divisors is an integer number (11521334700).

Almost surely, 2^421010123402 is an apocalyptic number.

421010123402 is a deficient number, since it is larger than the sum of its proper divisors (316355297398).

421010123402 is a wasteful number, since it uses less digits than its factorization.

421010123402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105599.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 421010123402 its reverse (204321010124), we get a palindrome (625331133526).

The spelling of 421010123402 in words is "four hundred twenty-one billion, ten million, one hundred twenty-three thousand, four hundred two".