40844042 has 4 divisors (see below), whose sum is σ = 61266066. Its totient is φ = 20422020.

The previous prime is 40844039. The next prime is 40844057. The reversal of 40844042 is 24044804.

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., 22857961 + 17986081 = 4781^2 + 4241^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10211009 + ... + 10211012.

Almost surely, 2^40844042 is an apocalyptic number.

40844042 is a deficient number, since it is larger than the sum of its proper divisors (20422024).

40844042 is a wasteful number, since it uses less digits than its factorization.

40844042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20422023.

The product of its (nonzero) digits is 4096, while the sum is 26.

The square root of 40844042 is about 6390.9343604828. The cubic root of 40844042 is about 344.3839513683.

Adding to 40844042 its reverse (24044804), we get a palindrome (64888846).

The spelling of 40844042 in words is "forty million, eight hundred forty-four thousand, forty-two".