99142646 has 16 divisors (see below), whose sum is σ = 159874560. Its totient is φ = 45962280.

The previous prime is 99142643. The next prime is 99142679. The reversal of 99142646 is 64624199.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99142643) by changing a digit.

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 in 7 ways as a sum of consecutive naturals, for example, 25970 + ... + 29541.

It is an arithmetic number, because the mean of its divisors is an integer number (9992160).

Almost surely, 2^99142646 is an apocalyptic number.

99142646 is a deficient number, since it is larger than the sum of its proper divisors (60731914).

99142646 is a wasteful number, since it uses less digits than its factorization.

99142646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55579.

The product of its digits is 93312, while the sum is 41.

The square root of 99142646 is about 9957.0400220146. The cubic root of 99142646 is about 462.8285793643.

The spelling of 99142646 in words is "ninety-nine million, one hundred forty-two thousand, six hundred forty-six".