1999124 has 6 divisors (see below), whose sum is σ = 3498474. Its totient is φ = 999560.

The previous prime is 1999121. The next prime is 1999163. The reversal of 1999124 is 4219991.

It can be written as a sum of positive squares in only one way, i.e., 1716100 + 283024 = 1310^2 + 532^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1999121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 249887 + ... + 249894.

It is an arithmetic number, because the mean of its divisors is an integer number (583079).

2^1999124 is an apocalyptic number.

It is an amenable number.

1999124 is a deficient number, since it is larger than the sum of its proper divisors (1499350).

1999124 is a wasteful number, since it uses less digits than its factorization.

1999124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 499785 (or 499783 counting only the distinct ones).

The product of its digits is 5832, while the sum is 35.

The square root of 1999124 is about 1413.9038156820. The cubic root of 1999124 is about 125.9737074559.

The spelling of 1999124 in words is "one million, nine hundred ninety-nine thousand, one hundred twenty-four".