40024004240 has 40 divisors (see below), whose sum is σ = 101515431168. Its totient is φ = 14554183040.

The previous prime is 40024004201. The next prime is 40024004249. The reversal of 40024004240 is 4240042004.

It is a tau number, because it is divible by the number of its divisors (40).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is not an unprimeable number, because it can be changed into a prime (40024004249) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22740032 + ... + 22741791.

Almost surely, 2^40024004240 is an apocalyptic number.

40024004240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40024004240 is an abundant number, since it is smaller than the sum of its proper divisors (61491426928).

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

40024004240 is a wasteful number, since it uses less digits than its factorization.

40024004240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45481847 (or 45481841 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 20.

Adding to 40024004240 its reverse (4240042004), we get a palindrome (44264046244).

The spelling of 40024004240 in words is "forty billion, twenty-four million, four thousand, two hundred forty".