1890742 has 16 divisors (see below), whose sum is σ = 3353760. Its totient is φ = 782208.

The previous prime is 1890731. The next prime is 1890743. The reversal of 1890742 is 2470981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1890743) 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 in 7 ways as a sum of consecutive naturals, for example, 1923 + ... + 2734.

It is an arithmetic number, because the mean of its divisors is an integer number (209610).

2^1890742 is an apocalyptic number.

1890742 is a deficient number, since it is larger than the sum of its proper divisors (1463018).

1890742 is a wasteful number, since it uses less digits than its factorization.

1890742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4695.

The product of its (nonzero) digits is 4032, while the sum is 31.

The square root of 1890742 is about 1375.0425447963. The cubic root of 1890742 is about 123.6547367382.

The spelling of 1890742 in words is "one million, eight hundred ninety thousand, seven hundred forty-two".