202101439 has 2 divisors, whose sum is σ = 202101440. Its totient is φ = 202101438.

The previous prime is 202101421. The next prime is 202101443. The reversal of 202101439 is 934101202.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 202101439 - 2⁷ = 202101311 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (202101469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101050719 + 101050720.

It is an arithmetic number, because the mean of its divisors is an integer number (101050720).

Almost surely, 2^202101439 is an apocalyptic number.

202101439 is a deficient number, since it is larger than the sum of its proper divisors (1).

202101439 is an equidigital number, since it uses as much as digits as its factorization.

202101439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 202101439 is about 14216.2385672160. The cubic root of 202101439 is about 586.8446305324.

The spelling of 202101439 in words is "two hundred two million, one hundred one thousand, four hundred thirty-nine".