40243020140 has 24 divisors (see below), whose sum is σ = 87236483712. Its totient is φ = 15577943040.

The previous prime is 40243020113. The next prime is 40243020149. The reversal of 40243020140 is 4102034204.

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 (40243020149) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32453429 + ... + 32454668.

It is an arithmetic number, because the mean of its divisors is an integer number (3634853488).

Almost surely, 2^40243020140 is an apocalyptic number.

It is an amenable number.

40243020140 is an abundant number, since it is smaller than the sum of its proper divisors (46993463572).

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

40243020140 is a wasteful number, since it uses less digits than its factorization.

40243020140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64908137 (or 64908135 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

Adding to 40243020140 its reverse (4102034204), we get a palindrome (44345054344).

The spelling of 40243020140 in words is "forty billion, two hundred forty-three million, twenty thousand, one hundred forty".