421337961 has 12 divisors (see below), whose sum is σ = 663926640. Its totient is φ = 255356280.

The previous prime is 421337953. The next prime is 421337971. The reversal of 421337961 is 169733124.

It is not a de Polignac number, because 421337961 - 2³ = 421337953 is a prime.

It is not an unprimeable number, because it can be changed into a prime (421337921) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2127871 + ... + 2128068.

It is an arithmetic number, because the mean of its divisors is an integer number (55327220).

Almost surely, 2^421337961 is an apocalyptic number.

It is an amenable number.

421337961 is a deficient number, since it is larger than the sum of its proper divisors (242588679).

421337961 is a wasteful number, since it uses less digits than its factorization.

421337961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4255956 (or 4255953 counting only the distinct ones).

The product of its digits is 27216, while the sum is 36.

The square root of 421337961 is about 20526.5184821976. The cubic root of 421337961 is about 749.6816195310.

The spelling of 421337961 in words is "four hundred twenty-one million, three hundred thirty-seven thousand, nine hundred sixty-one".