1869942 has 32 divisors (see below), whose sum is σ = 4032000. Its totient is φ = 576288.

The previous prime is 1869929. The next prime is 1869947. The reversal of 1869942 is 2499681.

It is a self number, because there is not a number n which added to its sum of digits gives 1869942.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1869947) 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, 5184 + ... + 5532.

It is an arithmetic number, because the mean of its divisors is an integer number (126000).

2^1869942 is an apocalyptic number.

1869942 is an abundant number, since it is smaller than the sum of its proper divisors (2162058).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1869942 is a wasteful number, since it uses less digits than its factorization.

1869942 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 420.

The product of its digits is 31104, while the sum is 39.

The square root of 1869942 is about 1367.4582260530. The cubic root of 1869942 is about 123.1996229679.

The spelling of 1869942 in words is "one million, eight hundred sixty-nine thousand, nine hundred forty-two".