40031542 has 16 divisors (see below), whose sum is σ = 62267760. Its totient is φ = 19279008.

The previous prime is 40031533. The next prime is 40031557. The reversal of 40031542 is 24513004.

40031542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 45208 + ... + 46084.

It is an arithmetic number, because the mean of its divisors is an integer number (3891735).

Almost surely, 2^40031542 is an apocalyptic number.

40031542 is a deficient number, since it is larger than the sum of its proper divisors (22236218).

40031542 is a wasteful number, since it uses less digits than its factorization.

40031542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1695.

The product of its (nonzero) digits is 480, while the sum is 19.

The square root of 40031542 is about 6327.0484429946. The cubic root of 40031542 is about 342.0850591527.

Adding to 40031542 its reverse (24513004), we get a palindrome (64544546).

The spelling of 40031542 in words is "forty million, thirty-one thousand, five hundred forty-two".