1942890 has 16 divisors (see below), whose sum is σ = 4663008. Its totient is φ = 518096.

The previous prime is 1942877. The next prime is 1942891. The reversal of 1942890 is 982491.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (1942891) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32352 + ... + 32411.

It is an arithmetic number, because the mean of its divisors is an integer number (291438).

2^1942890 is an apocalyptic number.

1942890 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1942890 is an abundant number, since it is smaller than the sum of its proper divisors (2720118).

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

1942890 is a wasteful number, since it uses less digits than its factorization.

1942890 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64773.

The product of its (nonzero) digits is 5184, while the sum is 33.

The square root of 1942890 is about 1393.8758911754. The cubic root of 1942890 is about 124.7812708169.

The spelling of 1942890 in words is "one million, nine hundred forty-two thousand, eight hundred ninety".