990124 has 6 divisors (see below), whose sum is σ = 1732724. Its totient is φ = 495060.

The previous prime is 990053. The next prime is 990137. The reversal of 990124 is 421099.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 123762 + ... + 123769.

2⁹⁹⁰¹²⁴ is an apocalyptic number.

It is an amenable number.

990124 is a deficient number, since it is larger than the sum of its proper divisors (742600).

990124 is a wasteful number, since it uses less digits than its factorization.

990124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 247535 (or 247533 counting only the distinct ones).

The product of its (nonzero) digits is 648, while the sum is 25.

The square root of 990124 is about 995.0497475001. The cubic root of 990124 is about 99.6697102881.

Subtracting from 990124 its sum of digits (25), we obtain a palindrome (990099).

It can be divided in two parts, 990 and 124, that multiplied together give a triangular number (122760 = T₄₉₅).

The spelling of 990124 in words is "nine hundred ninety thousand, one hundred twenty-four".