203242979 has 2 divisors, whose sum is σ = 203242980. Its totient is φ = 203242978.

The previous prime is 203242951. The next prime is 203242987. The reversal of 203242979 is 979242302.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 203242979 - 2⁸ = 203242723 is a prime.

It is not a weakly prime, because it can be changed into another prime (203242279) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 101621489 + 101621490.

It is an arithmetic number, because the mean of its divisors is an integer number (101621490).

Almost surely, 2^203242979 is an apocalyptic number.

203242979 is a deficient number, since it is larger than the sum of its proper divisors (1).

203242979 is an equidigital number, since it uses as much as digits as its factorization.

203242979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 38.

The square root of 203242979 is about 14256.3311900362. The cubic root of 203242979 is about 587.9474583607.

The spelling of 203242979 in words is "two hundred three million, two hundred forty-two thousand, nine hundred seventy-nine".