420195021158 has 16 divisors (see below), whose sum is σ = 717487151616. Its totient is φ = 182693487240.

The previous prime is 420195021139. The next prime is 420195021161. The reversal of 420195021158 is 851120591024.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 415211966 + ... + 415212977.

It is an arithmetic number, because the mean of its divisors is an integer number (44842946976).

Almost surely, 2^420195021158 is an apocalyptic number.

420195021158 is a deficient number, since it is larger than the sum of its proper divisors (297292130458).

420195021158 is a wasteful number, since it uses less digits than its factorization.

420195021158 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 830424979.

The product of its (nonzero) digits is 28800, while the sum is 38.

The spelling of 420195021158 in words is "four hundred twenty billion, one hundred ninety-five million, twenty-one thousand, one hundred fifty-eight".