40544142 has 16 divisors (see below), whose sum is σ = 81351120. Its totient is φ = 13470912.

The previous prime is 40544129. The next prime is 40544173. The reversal of 40544142 is 24144504.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8917 + ... + 12672.

It is an arithmetic number, because the mean of its divisors is an integer number (5084445).

Almost surely, 2^40544142 is an apocalyptic number.

40544142 is an abundant number, since it is smaller than the sum of its proper divisors (40806978).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40544142 is a wasteful number, since it uses less digits than its factorization.

40544142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21907.

The product of its (nonzero) digits is 2560, while the sum is 24.

The square root of 40544142 is about 6367.4282092537. The cubic root of 40544142 is about 343.5389928382.

Adding to 40544142 its reverse (24144504), we get a palindrome (64688646).

The spelling of 40544142 in words is "forty million, five hundred forty-four thousand, one hundred forty-two".