1905442 has 16 divisors (see below), whose sum is σ = 3563712. Its totient is φ = 742320.

The previous prime is 1905437. The next prime is 1905443. The reversal of 1905442 is 2445091.

It is not an unprimeable number, because it can be changed into a prime (1905443) 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, 6033 + ... + 6340.

It is an arithmetic number, because the mean of its divisors is an integer number (222732).

2^1905442 is an apocalyptic number.

1905442 is a deficient number, since it is larger than the sum of its proper divisors (1658270).

1905442 is a wasteful number, since it uses less digits than its factorization.

1905442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12393.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 1905442 is about 1380.3774846034. The cubic root of 1905442 is about 123.9743703533.

The spelling of 1905442 in words is "one million, nine hundred five thousand, four hundred forty-two".