421440363197 has 16 divisors (see below), whose sum is σ = 493128007680. Its totient is φ = 352632761712.

The previous prime is 421440363187. The next prime is 421440363203. The reversal of 421440363197 is 791363044124.

It is not a de Polignac number, because 421440363197 - 2¹⁶ = 421440297661 is a prime.

It is a super-2 number, since 2×421440363197² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421440363167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 131468 + ... + 927450.

It is an arithmetic number, because the mean of its divisors is an integer number (30820500480).

Almost surely, 2^421440363197 is an apocalyptic number.

It is an amenable number.

421440363197 is a deficient number, since it is larger than the sum of its proper divisors (71687644483).

421440363197 is a wasteful number, since it uses less digits than its factorization.

421440363197 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 797792.

The product of its (nonzero) digits is 435456, while the sum is 44.

The spelling of 421440363197 in words is "four hundred twenty-one billion, four hundred forty million, three hundred sixty-three thousand, one hundred ninety-seven".