1842172 has 6 divisors (see below), whose sum is σ = 3223808. Its totient is φ = 921084.

The previous prime is 1842161. The next prime is 1842173. The reversal of 1842172 is 2712481.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1842173) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 230268 + ... + 230275.

2^1842172 is an apocalyptic number.

It is an amenable number.

1842172 is a deficient number, since it is larger than the sum of its proper divisors (1381636).

1842172 is a wasteful number, since it uses less digits than its factorization.

1842172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 460547 (or 460545 counting only the distinct ones).

The product of its digits is 896, while the sum is 25.

The square root of 1842172 is about 1357.2663703194. The cubic root of 1842172 is about 122.5867107861.

The spelling of 1842172 in words is "one million, eight hundred forty-two thousand, one hundred seventy-two".