40003204020 has 96 divisors (see below), whose sum is σ = 125869669632. Its totient is φ = 9418810368.

The previous prime is 40003204001. The next prime is 40003204061. The reversal of 40003204020 is 2040230004.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1096977 + ... + 1132856.

It is an arithmetic number, because the mean of its divisors is an integer number (1311142392).

Almost surely, 2^40003204020 is an apocalyptic number.

It is an amenable number.

40003204020 is an abundant number, since it is smaller than the sum of its proper divisors (85866465612).

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

40003204020 is a wasteful number, since it uses less digits than its factorization.

40003204020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2229881 (or 2229879 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 15.

Adding to 40003204020 its reverse (2040230004), we get a palindrome (42043434024).

The spelling of 40003204020 in words is "forty billion, three million, two hundred four thousand, twenty".