99742558 has 4 divisors (see below), whose sum is σ = 149613840. Its totient is φ = 49871278.

The previous prime is 99742541. The next prime is 99742613. The reversal of 99742558 is 85524799.

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

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24935638 + ... + 24935641.

It is an arithmetic number, because the mean of its divisors is an integer number (37403460).

Almost surely, 2^99742558 is an apocalyptic number.

99742558 is a deficient number, since it is larger than the sum of its proper divisors (49871282).

99742558 is a wasteful number, since it uses less digits than its factorization.

99742558 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49871281.

The product of its digits is 907200, while the sum is 49.

The square root of 99742558 is about 9987.1196047709. The cubic root of 99742558 is about 463.7602277588.

The spelling of 99742558 in words is "ninety-nine million, seven hundred forty-two thousand, five hundred fifty-eight".