202423142040 has 64 divisors (see below), whose sum is σ = 694022204160. Its totient is φ = 46268146560.

The previous prime is 202423142027. The next prime is 202423142059. The reversal of 202423142040 is 40241324202.

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 202423142040.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120489126 + ... + 120490805.

It is an arithmetic number, because the mean of its divisors is an integer number (10844096940).

Almost surely, 2^202423142040 is an apocalyptic number.

202423142040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202423142040 is an abundant number, since it is smaller than the sum of its proper divisors (491599062120).

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

202423142040 is a wasteful number, since it uses less digits than its factorization.

202423142040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 240979952 (or 240979948 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 24.

Adding to 202423142040 its reverse (40241324202), we get a palindrome (242664466242).

The spelling of 202423142040 in words is "two hundred two billion, four hundred twenty-three million, one hundred forty-two thousand, forty".