259518442 has 8 divisors (see below), whose sum is σ = 392916096. Its totient is φ = 128546412.

The previous prime is 259518439. The next prime is 259518451. The reversal of 259518442 is 244815952.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 259518395 and 259518404.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 606138 + ... + 606565.

It is an arithmetic number, because the mean of its divisors is an integer number (49114512).

Almost surely, 2^259518442 is an apocalyptic number.

259518442 is a deficient number, since it is larger than the sum of its proper divisors (133397654).

259518442 is a wasteful number, since it uses less digits than its factorization.

259518442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1212812.

The product of its digits is 115200, while the sum is 40.

The square root of 259518442 is about 16109.5760962230. The cubic root of 259518442 is about 637.8561419998.

The spelling of 259518442 in words is "two hundred fifty-nine million, five hundred eighteen thousand, four hundred forty-two".