202042251 has 12 divisors (see below), whose sum is σ = 298626328. Its totient is φ = 131562144.

The previous prime is 202042231. The next prime is 202042259. The reversal of 202042251 is 152240202.

202042251 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 202042251 - 2¹⁰ = 202041227 is a prime.

It is a super-3 number, since 3×202042251³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (202042259) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 260650 + ... + 261423.

Almost surely, 2^202042251 is an apocalyptic number.

202042251 is a deficient number, since it is larger than the sum of its proper divisors (96584077).

202042251 is a wasteful number, since it uses less digits than its factorization.

202042251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 522122 (or 522119 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 202042251 is about 14214.1567108288. The cubic root of 202042251 is about 586.7873366120.

Adding to 202042251 its reverse (152240202), we get a palindrome (354282453).

The spelling of 202042251 in words is "two hundred two million, forty-two thousand, two hundred fifty-one".