40031242 has 8 divisors (see below), whose sum is σ = 60505632. Its totient is φ = 19862700.

The previous prime is 40031239. The next prime is 40031269. The reversal of 40031242 is 24213004.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76134 + ... + 76657.

It is an arithmetic number, because the mean of its divisors is an integer number (7563204).

Almost surely, 2^40031242 is an apocalyptic number.

40031242 is a deficient number, since it is larger than the sum of its proper divisors (20474390).

40031242 is a wasteful number, since it uses less digits than its factorization.

40031242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152924.

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 40031242 is about 6327.0247352132. The cubic root of 40031242 is about 342.0842046118.

Adding to 40031242 its reverse (24213004), we get a palindrome (64244246).

The spelling of 40031242 in words is "forty million, thirty-one thousand, two hundred forty-two".