422751278 has 16 divisors (see below), whose sum is σ = 662876160. Its totient is φ = 201965400.

The previous prime is 422751271. The next prime is 422751313. The reversal of 422751278 is 872157224.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422751271) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38258 + ... + 48053.

It is an arithmetic number, because the mean of its divisors is an integer number (41429760).

Almost surely, 2^422751278 is an apocalyptic number.

422751278 is a deficient number, since it is larger than the sum of its proper divisors (240124882).

422751278 is a wasteful number, since it uses less digits than its factorization.

422751278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86423.

The product of its digits is 62720, while the sum is 38.

The square root of 422751278 is about 20560.9162733571. The cubic root of 422751278 is about 750.5189167363.

The spelling of 422751278 in words is "four hundred twenty-two million, seven hundred fifty-one thousand, two hundred seventy-eight".