259129242 has 24 divisors (see below), whose sum is σ = 561817620. Its totient is φ = 86319360.

The previous prime is 259129229. The next prime is 259129253. The reversal of 259129242 is 242921952.

259129242 is a `hidden beast` number, since 2 + 591 + 29 + 2 + 42 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 247779081 + 11350161 = 15741^2 + 3369^2 .

It is a junction number, because it is equal to n+sod(n) for n = 259129197 and 259129206.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 30192 + ... + 37812.

Almost surely, 2^259129242 is an apocalyptic number.

259129242 is an abundant number, since it is smaller than the sum of its proper divisors (302688378).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

259129242 is a wasteful number, since it uses less digits than its factorization.

259129242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9518 (or 9515 counting only the distinct ones).

The product of its digits is 25920, while the sum is 36.

The square root of 259129242 is about 16097.4917922017. The cubic root of 259129242 is about 637.5371180233.

The spelling of 259129242 in words is "two hundred fifty-nine million, one hundred twenty-nine thousand, two hundred forty-two".