202140040 has 16 divisors (see below), whose sum is σ = 454815180. Its totient is φ = 80856000.

The previous prime is 202140019. The next prime is 202140041. The reversal of 202140040 is 40041202.

It can be written as a sum of positive squares in 2 ways, for example, as 163277284 + 38862756 = 12778^2 + 6234^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 202140040.

It is not an unprimeable number, because it can be changed into a prime (202140041) 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, 2526711 + ... + 2526790.

Almost surely, 2^202140040 is an apocalyptic number.

202140040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

202140040 is an abundant number, since it is smaller than the sum of its proper divisors (252675140).

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

202140040 is a wasteful number, since it uses less digits than its factorization.

202140040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5053512 (or 5053508 counting only the distinct ones).

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

The square root of 202140040 is about 14217.5961399950. The cubic root of 202140040 is about 586.8819902326.

Adding to 202140040 its reverse (40041202), we get a palindrome (242181242).

The spelling of 202140040 in words is "two hundred two million, one hundred forty thousand, forty".