40044042240 has 96 divisors (see below), whose sum is σ = 128109749040. Its totient is φ = 10678403072.

The previous prime is 40044042229. The next prime is 40044042263. The reversal of 40044042240 is 4224044004.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 40044042240.

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, 621039 + ... + 682478.

Almost surely, 2^40044042240 is an apocalyptic number.

40044042240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40044042240 is an abundant number, since it is smaller than the sum of its proper divisors (88065706800).

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

40044042240 is a wasteful number, since it uses less digits than its factorization.

40044042240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1303547 (or 1303527 counting only the distinct ones).

The product of its (nonzero) digits is 4096, while the sum is 24.

Adding to 40044042240 its reverse (4224044004), we get a palindrome (44268086244).

The spelling of 40044042240 in words is "forty billion, forty-four million, forty-two thousand, two hundred forty".