1204990 has 16 divisors (see below), whose sum is σ = 2222640. Its totient is φ = 470080.

The previous prime is 1204981. The next prime is 1205027. The reversal of 1204990 is 994021.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1060 + ... + 1879.

It is an arithmetic number, because the mean of its divisors is an integer number (138915).

2^1204990 is an apocalyptic number.

1204990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1204990 is a deficient number, since it is larger than the sum of its proper divisors (1017650).

1204990 is a wasteful number, since it uses less digits than its factorization.

1204990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2987.

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

The square root of 1204990 is about 1097.7203651204. The cubic root of 1204990 is about 106.4129495046.

The spelling of 1204990 in words is "one million, two hundred four thousand, nine hundred ninety".