40240020001 has 4 divisors (see below), whose sum is σ = 41989586112. Its totient is φ = 38490453892.

The previous prime is 40240019987. The next prime is 40240020011. The reversal of 40240020001 is 10002004204.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40240020001 - 2⁷ = 40240019873 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40240020011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 874783021 + ... + 874783066.

It is an arithmetic number, because the mean of its divisors is an integer number (10497396528).

Almost surely, 2^40240020001 is an apocalyptic number.

It is an amenable number.

40240020001 is a deficient number, since it is larger than the sum of its proper divisors (1749566111).

40240020001 is a wasteful number, since it uses less digits than its factorization.

40240020001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1749566110.

The product of its (nonzero) digits is 64, while the sum is 13.

Adding to 40240020001 its reverse (10002004204), we get a palindrome (50242024205).

The spelling of 40240020001 in words is "forty billion, two hundred forty million, twenty thousand, one".