42231042 has 36 divisors (see below), whose sum is σ = 106441686. Its totient is φ = 12065760.

The previous prime is 42231041. The next prime is 42231067. The reversal of 42231042 is 24013224.

It can be written as a sum of positive squares in only one way, i.e., 27783441 + 14447601 = 5271^2 + 3801^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (42231041) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 23059 + ... + 24822.

Almost surely, 2^42231042 is an apocalyptic number.

42231042 is a gapful number since it is divisible by the number (42) formed by its first and last digit.

42231042 is an abundant number, since it is smaller than the sum of its proper divisors (64210644).

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

42231042 is a wasteful number, since it uses less digits than its factorization.

42231042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47903 (or 47893 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 42231042 is about 6498.5415286816. The cubic root of 42231042 is about 348.2388867105.

Adding to 42231042 its reverse (24013224), we get a palindrome (66244266).

The spelling of 42231042 in words is "forty-two million, two hundred thirty-one thousand, forty-two".