1906542 has 24 divisors (see below), whose sum is σ = 4506840. Its totient is φ = 577680.

The previous prime is 1906537. The next prime is 1906543. The reversal of 1906542 is 2456091.

1906542 is a `hidden beast` number, since 1 + 9 + 0 + 654 + 2 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1906543) 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 11 ways as a sum of consecutive naturals, for example, 4617 + ... + 5012.

It is an arithmetic number, because the mean of its divisors is an integer number (187785).

2^1906542 is an apocalyptic number.

1906542 is an abundant number, since it is smaller than the sum of its proper divisors (2600298).

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

1906542 is a wasteful number, since it uses less digits than its factorization.

1906542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9648 (or 9645 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 1906542 is about 1380.7758688506. The cubic root of 1906542 is about 123.9982223124.

The spelling of 1906542 in words is "one million, nine hundred six thousand, five hundred forty-two".