1982123 has 16 divisors (see below), whose sum is σ = 2370816. Its totient is φ = 1633440.

The previous prime is 1982111. The next prime is 1982129. The reversal of 1982123 is 3212891.

It is not a de Polignac number, because 1982123 - 2⁶ = 1982059 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1982092 and 1982101.

It is not an unprimeable number, because it can be changed into a prime (1982129) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11786 + ... + 11952.

It is an arithmetic number, because the mean of its divisors is an integer number (148176).

2^1982123 is an apocalyptic number.

1982123 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1982123 is a deficient number, since it is larger than the sum of its proper divisors (388693).

1982123 is a wasteful number, since it uses less digits than its factorization.

1982123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274.

The product of its digits is 864, while the sum is 26.

The square root of 1982123 is about 1407.8789010423. The cubic root of 1982123 is about 125.6155874403.

The spelling of 1982123 in words is "one million, nine hundred eighty-two thousand, one hundred twenty-three".