259926642 has 24 divisors (see below), whose sum is σ = 563510844. Its totient is φ = 86590464.

The previous prime is 259926637. The next prime is 259926671. The reversal of 259926642 is 246629952.

It can be written as a sum of positive squares in 2 ways, for example, as 249292521 + 10634121 = 15789^2 + 3261^2 .

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 37738 + ... + 44090.

Almost surely, 2^259926642 is an apocalyptic number.

259926642 is an abundant number, since it is smaller than the sum of its proper divisors (303584202).

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

259926642 is a wasteful number, since it uses less digits than its factorization.

259926642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8634 (or 8631 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The square root of 259926642 is about 16122.2406011075. The cubic root of 259926642 is about 638.1903976050.

It can be divided in two parts, 2599 and 26642, that added together give a square (29241 = 171²).

The spelling of 259926642 in words is "two hundred fifty-nine million, nine hundred twenty-six thousand, six hundred forty-two".