99142755 has 8 divisors (see below), whose sum is σ = 158628432. Its totient is φ = 52876128.

The previous prime is 99142739. The next prime is 99142777. The reversal of 99142755 is 55724199.

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

It is not a de Polignac number, because 99142755 - 2⁴ = 99142739 is a prime.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3304744 + ... + 3304773.

It is an arithmetic number, because the mean of its divisors is an integer number (19828554).

Almost surely, 2^99142755 is an apocalyptic number.

99142755 is a deficient number, since it is larger than the sum of its proper divisors (59485677).

99142755 is a wasteful number, since it uses less digits than its factorization.

99142755 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6609525.

The product of its digits is 113400, while the sum is 42.

The square root of 99142755 is about 9957.0454955273. The cubic root of 99142755 is about 462.8287489795.

The spelling of 99142755 in words is "ninety-nine million, one hundred forty-two thousand, seven hundred fifty-five".