422231240 has 32 divisors (see below), whose sum is σ = 991327680. Its totient is φ = 161548992.

The previous prime is 422231237. The next prime is 422231267. The reversal of 422231240 is 42132224.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 228554 + ... + 230393.

It is an arithmetic number, because the mean of its divisors is an integer number (30978990).

Almost surely, 2^422231240 is an apocalyptic number.

422231240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

422231240 is an abundant number, since it is smaller than the sum of its proper divisors (569096440).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

422231240 is a wasteful number, since it uses less digits than its factorization.

422231240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 458981 (or 458977 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 422231240 is about 20548.2661069006. The cubic root of 422231240 is about 750.2110457925.

Adding to 422231240 its reverse (42132224), we get a palindrome (464363464).

The spelling of 422231240 in words is "four hundred twenty-two million, two hundred thirty-one thousand, two hundred forty".