258561442 has 8 divisors (see below), whose sum is σ = 393631056. Its totient is φ = 127351092.

The previous prime is 258561437. The next prime is 258561461. The reversal of 258561442 is 244165852.

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

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, 964648 + ... + 964915.

It is an arithmetic number, because the mean of its divisors is an integer number (49203882).

Almost surely, 2^258561442 is an apocalyptic number.

258561442 is a deficient number, since it is larger than the sum of its proper divisors (135069614).

258561442 is a wasteful number, since it uses less digits than its factorization.

258561442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1929632.

The product of its digits is 76800, while the sum is 37.

The square root of 258561442 is about 16079.8458325943. The cubic root of 258561442 is about 637.0711236629.

The spelling of 258561442 in words is "two hundred fifty-eight million, five hundred sixty-one thousand, four hundred forty-two".