990126 has 24 divisors (see below), whose sum is σ = 2179944. Its totient is φ = 324720.

The previous prime is 990053. The next prime is 990137. The reversal of 990126 is 621099.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 990126.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 796 + ... + 1616.

It is an arithmetic number, because the mean of its divisors is an integer number (90831).

2⁹⁹⁰¹²⁶ is an apocalyptic number.

990126 is an abundant number, since it is smaller than the sum of its proper divisors (1189818).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

990126 is a wasteful number, since it uses less digits than its factorization.

990126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 896 (or 893 counting only the distinct ones).

The product of its (nonzero) digits is 972, while the sum is 27.

The square root of 990126 is about 995.0507524745. The cubic root of 990126 is about 99.6697773973.

Subtracting from 990126 its sum of digits (27), we obtain a palindrome (990099).

The spelling of 990126 in words is "nine hundred ninety thousand, one hundred twenty-six".