40142044 has 12 divisors (see below), whose sum is σ = 70334824. Its totient is φ = 20046384.

The previous prime is 40142029. The next prime is 40142057. The reversal of 40142044 is 44024104.

It is a super-2 number, since 2×40142044² = 3222767392995872, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2214 + ... + 9229.

Almost surely, 2^40142044 is an apocalyptic number.

It is an amenable number.

40142044 is a deficient number, since it is larger than the sum of its proper divisors (30192780).

40142044 is a wasteful number, since it uses less digits than its factorization.

40142044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12324 (or 12322 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 40142044 is about 6335.7749328713. The cubic root of 40142044 is about 342.3995307990.

Adding to 40142044 its reverse (44024104), we get a palindrome (84166148).

The spelling of 40142044 in words is "forty million, one hundred forty-two thousand, forty-four".