421402977 has 12 divisors (see below), whose sum is σ = 608871120. Its totient is φ = 280853208.

The previous prime is 421402931. The next prime is 421402981. The reversal of 421402977 is 779204124.

It is not a de Polignac number, because 421402977 - 2⁶ = 421402913 is a prime.

It is not an unprimeable number, because it can be changed into a prime (421402907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57558 + ... + 64464.

It is an arithmetic number, because the mean of its divisors is an integer number (50739260).

Almost surely, 2^421402977 is an apocalyptic number.

It is an amenable number.

421402977 is a deficient number, since it is larger than the sum of its proper divisors (187468143).

421402977 is a wasteful number, since it uses less digits than its factorization.

421402977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13692 (or 13689 counting only the distinct ones).

The product of its (nonzero) digits is 28224, while the sum is 36.

The square root of 421402977 is about 20528.1021285456. The cubic root of 421402977 is about 749.7201782794.

The spelling of 421402977 in words is "four hundred twenty-one million, four hundred two thousand, nine hundred seventy-seven".