40624042 has 4 divisors (see below), whose sum is σ = 60936066. Its totient is φ = 20312020.

The previous prime is 40624021. The next prime is 40624057. The reversal of 40624042 is 24042604.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 37344321 + 3279721 = 6111^2 + 1811^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10156009 + ... + 10156012.

Almost surely, 2^40624042 is an apocalyptic number.

40624042 is a deficient number, since it is larger than the sum of its proper divisors (20312024).

40624042 is a wasteful number, since it uses less digits than its factorization.

40624042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20312023.

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 40624042 is about 6373.6992398449. The cubic root of 40624042 is about 343.7645145607.

Adding to 40624042 its reverse (24042604), we get a palindrome (64666646).

The spelling of 40624042 in words is "forty million, six hundred twenty-four thousand, forty-two".