40142044444 has 24 divisors (see below), whose sum is σ = 75963424320. Its totient is φ = 18488449536.

The previous prime is 40142044399. The next prime is 40142044469. The reversal of 40142044444 is 44444024104.

It is a super-2 number, since 2×40142044444² (a number of 22 digits) 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 (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6276849 + ... + 6283240.

It is an arithmetic number, because the mean of its divisors is an integer number (3165142680).

Almost surely, 2^40142044444 is an apocalyptic number.

It is an amenable number.

40142044444 is a deficient number, since it is larger than the sum of its proper divisors (35821379876).

40142044444 is a wasteful number, since it uses less digits than its factorization.

40142044444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12560157 (or 12560155 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 31.

Adding to 40142044444 its reverse (44444024104), we get a palindrome (84586068548).

The spelling of 40142044444 in words is "forty billion, one hundred forty-two million, forty-four thousand, four hundred forty-four".