33111440042 has 4 divisors (see below), whose sum is σ = 49667160066. Its totient is φ = 16555720020.

The previous prime is 33111440041. The next prime is 33111440057. The reversal of 33111440042 is 24004411133.

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., 21423884161 + 11687555881 = 146369^2 + 108109^2 .

It is not an unprimeable number, because it can be changed into a prime (33111440041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8277860009 + ... + 8277860012.

Almost surely, 2^33111440042 is an apocalyptic number.

33111440042 is a deficient number, since it is larger than the sum of its proper divisors (16555720024).

33111440042 is a wasteful number, since it uses less digits than its factorization.

33111440042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16555720023.

The product of its (nonzero) digits is 1152, while the sum is 23.

Adding to 33111440042 its reverse (24004411133), we get a palindrome (57115851175).

The spelling of 33111440042 in words is "thirty-three billion, one hundred eleven million, four hundred forty thousand, forty-two".