42031330 has 16 divisors (see below), whose sum is σ = 82534464. Its totient is φ = 15284080.

The previous prime is 42031321. The next prime is 42031331. The reversal of 42031330 is 3313024.

It is not an unprimeable number, because it can be changed into a prime (42031331) 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, 190942 + ... + 191161.

It is an arithmetic number, because the mean of its divisors is an integer number (5158404).

Almost surely, 2^42031330 is an apocalyptic number.

42031330 is a deficient number, since it is larger than the sum of its proper divisors (40503134).

42031330 is a wasteful number, since it uses less digits than its factorization.

42031330 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 382121.

The product of its (nonzero) digits is 216, while the sum is 16.

The square root of 42031330 is about 6483.1574097811. The cubic root of 42031330 is about 347.6890746846.

Adding to 42031330 its reverse (3313024), we get a palindrome (45344354).

The spelling of 42031330 in words is "forty-two million, thirty-one thousand, three hundred thirty".