105252239 has 2 divisors, whose sum is σ = 105252240. Its totient is φ = 105252238.

The previous prime is 105252211. The next prime is 105252263. The reversal of 105252239 is 932252501.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-105252239 is a prime.

It is a super-2 number, since 2×105252239² = 22156067629026242, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (105252299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52626119 + 52626120.

It is an arithmetic number, because the mean of its divisors is an integer number (52626120).

Almost surely, 2^105252239 is an apocalyptic number.

105252239 is a deficient number, since it is larger than the sum of its proper divisors (1).

105252239 is an equidigital number, since it uses as much as digits as its factorization.

105252239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5400, while the sum is 29.

The square root of 105252239 is about 10259.2513859443. The cubic root of 105252239 is about 472.1468693934.

The spelling of 105252239 in words is "one hundred five million, two hundred fifty-two thousand, two hundred thirty-nine".