99122143 has 4 divisors (see below), whose sum is σ = 99537120. Its totient is φ = 98707168.

The previous prime is 99122141. The next prime is 99122197. The reversal of 99122143 is 34122199.

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

It is a cyclic number.

It is not a de Polignac number, because 99122143 - 2¹ = 99122141 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99122141) 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 3 ways as a sum of consecutive naturals, for example, 207130 + ... + 207607.

It is an arithmetic number, because the mean of its divisors is an integer number (24884280).

Almost surely, 2^99122143 is an apocalyptic number.

99122143 is a deficient number, since it is larger than the sum of its proper divisors (414977).

99122143 is a wasteful number, since it uses less digits than its factorization.

99122143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 414976.

The product of its digits is 3888, while the sum is 31.

The square root of 99122143 is about 9956.0103957358. The cubic root of 99122143 is about 462.7966723799.

The spelling of 99122143 in words is "ninety-nine million, one hundred twenty-two thousand, one hundred forty-three".