1985042 has 4 divisors (see below), whose sum is σ = 2977566. Its totient is φ = 992520.

The previous prime is 1985041. The next prime is 1985047. The reversal of 1985042 is 2405891.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1229881 + 755161 = 1109^2 + 869^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1984996 and 1985014.

It is not an unprimeable number, because it can be changed into a prime (1985041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 496259 + ... + 496262.

2^1985042 is an apocalyptic number.

1985042 is a deficient number, since it is larger than the sum of its proper divisors (992524).

1985042 is an equidigital number, since it uses as much as digits as its factorization.

1985042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 992523.

The product of its (nonzero) digits is 2880, while the sum is 29.

The square root of 1985042 is about 1408.9151855240. The cubic root of 1985042 is about 125.6772203548.

The spelling of 1985042 in words is "one million, nine hundred eighty-five thousand, forty-two".