260002129 has 4 divisors (see below), whose sum is σ = 263563876. Its totient is φ = 256440384.

The previous prime is 260002121. The next prime is 260002151. The reversal of 260002129 is 921200062.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 921200062 = 2 ⋅460600031.

It can be written as a sum of positive squares in 2 ways, for example, as 188430529 + 71571600 = 13727^2 + 8460^2 .

It is a cyclic number.

It is not a de Polignac number, because 260002129 - 2³ = 260002121 is a prime.

It is a super-2 number, since 2×260002129² = 135202214169065282, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (260002121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1780764 + ... + 1780909.

It is an arithmetic number, because the mean of its divisors is an integer number (65890969).

Almost surely, 2^260002129 is an apocalyptic number.

It is an amenable number.

260002129 is a deficient number, since it is larger than the sum of its proper divisors (3561747).

260002129 is an equidigital number, since it uses as much as digits as its factorization.

260002129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3561746.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 260002129 is about 16124.5815139494. The cubic root of 260002129 is about 638.2521719776.

The spelling of 260002129 in words is "two hundred sixty million, two thousand, one hundred twenty-nine".