259478442 has 12 divisors (see below), whose sum is σ = 562203330. Its totient is φ = 86492808.

The previous prime is 259478441. The next prime is 259478449. The reversal of 259478442 is 244874952.

It can be written as a sum of positive squares in only one way, i.e., 258855921 + 622521 = 16089^2 + 789^2 .

It is not an unprimeable number, because it can be changed into a prime (259478441) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7207717 + ... + 7207752.

Almost surely, 2^259478442 is an apocalyptic number.

259478442 is an abundant number, since it is smaller than the sum of its proper divisors (302724888).

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

259478442 is a wasteful number, since it uses less digits than its factorization.

259478442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14415477 (or 14415474 counting only the distinct ones).

The product of its digits is 645120, while the sum is 45.

The square root of 259478442 is about 16108.3345507846. The cubic root of 259478442 is about 637.8233690474.

The spelling of 259478442 in words is "two hundred fifty-nine million, four hundred seventy-eight thousand, four hundred forty-two".