40402004004240 has 40 divisors (see below), whose sum is σ = 125246212413888. Its totient is φ = 10773867734400.

The previous prime is 40402004004211. The next prime is 40402004004289. The reversal of 40402004004240 is 4240040020404.

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 (24).

It is a self number, because there is not a number n which added to its sum of digits gives 40402004004240.

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, 84170841436 + ... + 84170841915.

Almost surely, 2^{40402004004240} is an apocalyptic number.

40402004004240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

40402004004240 is an abundant number, since it is smaller than the sum of its proper divisors (84844208409648).

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

40402004004240 is a wasteful number, since it uses less digits than its factorization.

40402004004240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168341683367 (or 168341683361 counting only the distinct ones).

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

Adding to 40402004004240 its reverse (4240040020404), we get a palindrome (44642044024644).

The spelling of 40402004004240 in words is "forty trillion, four hundred two billion, four million, four thousand, two hundred forty".