1540742 has 16 divisors (see below), whose sum is σ = 2661120. Its totient is φ = 655368.

The previous prime is 1540711. The next prime is 1540751. The reversal of 1540742 is 2470451.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2009 + ... + 2667.

It is an arithmetic number, because the mean of its divisors is an integer number (166320).

2^1540742 is an apocalyptic number.

1540742 is a deficient number, since it is larger than the sum of its proper divisors (1120378).

1540742 is a wasteful number, since it uses less digits than its factorization.

1540742 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 835.

The product of its (nonzero) digits is 1120, while the sum is 23.

The square root of 1540742 is about 1241.2662889163. The cubic root of 1540742 is about 115.4985788447.

The spelling of 1540742 in words is "one million, five hundred forty thousand, seven hundred forty-two".