42271938 has 12 divisors (see below), whose sum is σ = 91589238. Its totient is φ = 14090640.

The previous prime is 42271919. The next prime is 42271939. The reversal of 42271938 is 83917224.

It can be written as a sum of positive squares in only one way, i.e., 40030929 + 2241009 = 6327^2 + 1497^2 .

It is not an unprimeable number, because it can be changed into a prime (42271939) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1174203 + ... + 1174238.

Almost surely, 2^42271938 is an apocalyptic number.

42271938 is an abundant number, since it is smaller than the sum of its proper divisors (49317300).

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

42271938 is a wasteful number, since it uses less digits than its factorization.

42271938 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2348449 (or 2348446 counting only the distinct ones).

The product of its digits is 24192, while the sum is 36.

The square root of 42271938 is about 6501.6873194579. The cubic root of 42271938 is about 348.3512604699.

The spelling of 42271938 in words is "forty-two million, two hundred seventy-one thousand, nine hundred thirty-eight".