202140023 has 4 divisors (see below), whose sum is σ = 202527048. Its totient is φ = 201753000.

The previous prime is 202140019. The next prime is 202140041. The reversal of 202140023 is 320041202.

202140023 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 202140023 - 2² = 202140019 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (202143023) 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, 192728 + ... + 193773.

It is an arithmetic number, because the mean of its divisors is an integer number (50631762).

Almost surely, 2^202140023 is an apocalyptic number.

202140023 is a deficient number, since it is larger than the sum of its proper divisors (387025).

202140023 is an equidigital number, since it uses as much as digits as its factorization.

202140023 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 387024.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 202140023 is about 14217.5955421442. The cubic root of 202140023 is about 586.8819737804.

Adding to 202140023 its reverse (320041202), we get a palindrome (522181225).

The spelling of 202140023 in words is "two hundred two million, one hundred forty thousand, twenty-three".