422601921 has 24 divisors (see below), whose sum is σ = 728295840. Its totient is φ = 241486056.

The previous prime is 422601911. The next prime is 422601941. The reversal of 422601921 is 129106224.

It is not a de Polignac number, because 422601921 - 2¹³ = 422593729 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (422601911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 158391 + ... + 161036.

It is an arithmetic number, because the mean of its divisors is an integer number (30345660).

Almost surely, 2^422601921 is an apocalyptic number.

It is an amenable number.

422601921 is a deficient number, since it is larger than the sum of its proper divisors (305693919).

422601921 is a wasteful number, since it uses less digits than its factorization.

422601921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 319450 (or 319437 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 422601921 is about 20557.2838916040. The cubic root of 422601921 is about 750.4305208218.

The spelling of 422601921 in words is "four hundred twenty-two million, six hundred one thousand, nine hundred twenty-one".