258120542 has 4 divisors (see below), whose sum is σ = 387180816. Its totient is φ = 129060270.

The previous prime is 258120521. The next prime is 258120557. The reversal of 258120542 is 245021852.

It is a semiprime because it is the product of two primes.

It is a congruent number.

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 as a sum of consecutive naturals, namely, 64530134 + ... + 64530137.

It is an arithmetic number, because the mean of its divisors is an integer number (96795204).

Almost surely, 2^258120542 is an apocalyptic number.

258120542 is a deficient number, since it is larger than the sum of its proper divisors (129060274).

258120542 is a wasteful number, since it uses less digits than its factorization.

258120542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129060273.

The product of its (nonzero) digits is 6400, while the sum is 29.

The square root of 258120542 is about 16066.1302745870. The cubic root of 258120542 is about 636.7088055708.

The spelling of 258120542 in words is "two hundred fifty-eight million, one hundred twenty thousand, five hundred forty-two".