258199742 has 4 divisors (see below), whose sum is σ = 387299616. Its totient is φ = 129099870.

The previous prime is 258199687. The next prime is 258199783. The reversal of 258199742 is 247991852.

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, 64549934 + ... + 64549937.

It is an arithmetic number, because the mean of its divisors is an integer number (96824904).

Almost surely, 2^258199742 is an apocalyptic number.

258199742 is a deficient number, since it is larger than the sum of its proper divisors (129099874).

258199742 is a wasteful number, since it uses less digits than its factorization.

258199742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129099873.

The product of its digits is 362880, while the sum is 47.

The square root of 258199742 is about 16068.5948981235. The cubic root of 258199742 is about 636.7739200845.

The spelling of 258199742 in words is "two hundred fifty-eight million, one hundred ninety-nine thousand, seven hundred forty-two".