99742651 has 8 divisors (see below), whose sum is σ = 105112224. Its totient is φ = 94459200.

The previous prime is 99742637. The next prime is 99742663. The reversal of 99742651 is 15624799.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 99742651 - 2⁵ = 99742619 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 99742598 and 99742607.

It is not an unprimeable number, because it can be changed into a prime (99742681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19146 + ... + 23791.

It is an arithmetic number, because the mean of its divisors is an integer number (13139028).

Almost surely, 2^99742651 is an apocalyptic number.

99742651 is a deficient number, since it is larger than the sum of its proper divisors (5369573).

99742651 is a wasteful number, since it uses less digits than its factorization.

99742651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43061.

The product of its digits is 136080, while the sum is 43.

The square root of 99742651 is about 9987.1242607670. The cubic root of 99742651 is about 463.7603718955.

The spelling of 99742651 in words is "ninety-nine million, seven hundred forty-two thousand, six hundred fifty-one".