260423129 has 2 divisors, whose sum is σ = 260423130. Its totient is φ = 260423128.

The previous prime is 260423123. The next prime is 260423159. The reversal of 260423129 is 921324062.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 186377104 + 74046025 = 13652^2 + 8605^2 .

It is a cyclic number.

It is not a de Polignac number, because 260423129 - 2⁴ = 260423113 is a prime.

It is a super-2 number, since 2×260423129² = 135640412236301282, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (260423123) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130211564 + 130211565.

It is an arithmetic number, because the mean of its divisors is an integer number (130211565).

Almost surely, 2^260423129 is an apocalyptic number.

It is an amenable number.

260423129 is a deficient number, since it is larger than the sum of its proper divisors (1).

260423129 is an equidigital number, since it uses as much as digits as its factorization.

260423129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 29.

The square root of 260423129 is about 16137.6308360304. The cubic root of 260423129 is about 638.5964759077.

The spelling of 260423129 in words is "two hundred sixty million, four hundred twenty-three thousand, one hundred twenty-nine".