42031442 has 16 divisors (see below), whose sum is σ = 67191552. Its totient is φ = 19673280.

The previous prime is 42031441. The next prime is 42031447. The reversal of 42031442 is 24413024.

It is not an unprimeable number, because it can be changed into a prime (42031441) 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, 7559 + ... + 11882.

It is an arithmetic number, because the mean of its divisors is an integer number (4199472).

Almost surely, 2^42031442 is an apocalyptic number.

42031442 is a deficient number, since it is larger than the sum of its proper divisors (25160110).

42031442 is a wasteful number, since it uses less digits than its factorization.

42031442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19513.

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

The square root of 42031442 is about 6483.1660475419. The cubic root of 42031442 is about 347.6893835110.

Adding to 42031442 its reverse (24413024), we get a palindrome (66444466).

The spelling of 42031442 in words is "forty-two million, thirty-one thousand, four hundred forty-two".