420805123402 has 16 divisors (see below), whose sum is σ = 633117192192. Its totient is φ = 209766514000.

The previous prime is 420805123399. The next prime is 420805123429. The reversal of 420805123402 is 204321508024.

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, 1762152 + ... + 1986652.

It is an arithmetic number, because the mean of its divisors is an integer number (39569824512).

Almost surely, 2^420805123402 is an apocalyptic number.

420805123402 is a deficient number, since it is larger than the sum of its proper divisors (212312068790).

420805123402 is a wasteful number, since it uses less digits than its factorization.

420805123402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 227333.

The product of its (nonzero) digits is 15360, while the sum is 31.

The spelling of 420805123402 in words is "four hundred twenty billion, eight hundred five million, one hundred twenty-three thousand, four hundred two".