422437281 has 12 divisors (see below), whose sum is σ = 655209072. Its totient is φ = 241392648.

The previous prime is 422437271. The next prime is 422437283. The reversal of 422437281 is 182734224.

It is a happy number.

It is not a de Polignac number, because 422437281 - 2⁷ = 422437153 is a prime.

It is a super-2 number, since 2×422437281² = 356906512757345922, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (422437283) 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, 1436715 + ... + 1437008.

It is an arithmetic number, because the mean of its divisors is an integer number (54600756).

Almost surely, 2^422437281 is an apocalyptic number.

It is an amenable number.

422437281 is a deficient number, since it is larger than the sum of its proper divisors (232771791).

422437281 is a wasteful number, since it uses less digits than its factorization.

422437281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2873740 (or 2873733 counting only the distinct ones).

The product of its digits is 21504, while the sum is 33.

The square root of 422437281 is about 20553.2790814507. The cubic root of 422437281 is about 750.3330556323. Note that the first 3 decimals are identical.

The spelling of 422437281 in words is "four hundred twenty-two million, four hundred thirty-seven thousand, two hundred eighty-one".