202040523 has 6 divisors (see below), whose sum is σ = 291836324. Its totient is φ = 134693676.

The previous prime is 202040519. The next prime is 202040539. The reversal of 202040523 is 325040202.

It is not a de Polignac number, because 202040523 - 2² = 202040519 is a prime.

It is a super-2 number, since 2×202040523² = 81640745868227058, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 202040496 and 202040505.

It is not an unprimeable number, because it can be changed into a prime (202044523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 11224465 + ... + 11224482.

Almost surely, 2^202040523 is an apocalyptic number.

202040523 is a deficient number, since it is larger than the sum of its proper divisors (89795801).

202040523 is a wasteful number, since it uses less digits than its factorization.

202040523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22448953 (or 22448950 counting only the distinct ones).

The product of its (nonzero) digits is 480, while the sum is 18.

The square root of 202040523 is about 14214.0959262276. The cubic root of 202040523 is about 586.7856637417.

Adding to 202040523 its reverse (325040202), we get a palindrome (527080725).

The spelling of 202040523 in words is "two hundred two million, forty thousand, five hundred twenty-three".