202434139 has 2 divisors, whose sum is σ = 202434140. Its totient is φ = 202434138.

The previous prime is 202434137. The next prime is 202434157. The reversal of 202434139 is 931434202.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 202434139 - 2¹ = 202434137 is a prime.

Together with 202434137, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (202434131) 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 as a sum of consecutive naturals, namely, 101217069 + 101217070.

It is an arithmetic number, because the mean of its divisors is an integer number (101217070).

Almost surely, 2^202434139 is an apocalyptic number.

202434139 is a deficient number, since it is larger than the sum of its proper divisors (1).

202434139 is an equidigital number, since it uses as much as digits as its factorization.

202434139 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 28.

The square root of 202434139 is about 14227.9351629110. The cubic root of 202434139 is about 587.1664757912.

It can be divided in two parts, 2024 and 34139, that added together give a palindrome (36163).

The spelling of 202434139 in words is "two hundred two million, four hundred thirty-four thousand, one hundred thirty-nine".