40342144 has 32 divisors (see below), whose sum is σ = 80735040. Its totient is φ = 20079360.

The previous prime is 40342123. The next prime is 40342151. The reversal of 40342144 is 44124304.

It is a tau number, because it is divible by the number of its divisors (32).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 34107 + ... + 35269.

It is an arithmetic number, because the mean of its divisors is an integer number (2522970).

Almost surely, 2^40342144 is an apocalyptic number.

It is an amenable number.

40342144 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

40342144 is a wasteful number, since it uses less digits than its factorization.

40342144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1448 (or 1436 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

The square root of 40342144 is about 6351.5465833134. The cubic root of 40342144 is about 342.9675189601.

Adding to 40342144 its reverse (44124304), we get a palindrome (84466448).

The spelling of 40342144 in words is "forty million, three hundred forty-two thousand, one hundred forty-four".