123202039 has 2 divisors, whose sum is σ = 123202040. Its totient is φ = 123202038.

The previous prime is 123202033. The next prime is 123202049. The reversal of 123202039 is 930202321.

It is a weak prime.

It is an emirp because it is prime and its reverse (930202321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 123202039 - 2¹⁵ = 123169271 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123202033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61601019 + 61601020.

It is an arithmetic number, because the mean of its divisors is an integer number (61601020).

Almost surely, 2^123202039 is an apocalyptic number.

123202039 is a deficient number, since it is larger than the sum of its proper divisors (1).

123202039 is an equidigital number, since it uses as much as digits as its factorization.

123202039 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 123202039 is about 11099.6413906036. The cubic root of 123202039 is about 497.5911320138.

The spelling of 123202039 in words is "one hundred twenty-three million, two hundred two thousand, thirty-nine".