1540842 has 16 divisors (see below), whose sum is σ = 3125952. Its totient is φ = 506240.

The previous prime is 1540841. The next prime is 1540849. The reversal of 1540842 is 2480451.

It is not an unprimeable number, because it can be changed into a prime (1540841) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1383 + ... + 2234.

It is an arithmetic number, because the mean of its divisors is an integer number (195372).

2^1540842 is an apocalyptic number.

1540842 is an abundant number, since it is smaller than the sum of its proper divisors (1585110).

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

1540842 is a wasteful number, since it uses less digits than its factorization.

1540842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3693.

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 1540842 is about 1241.3065697079. The cubic root of 1540842 is about 115.5010775560.

The spelling of 1540842 in words is "one million, five hundred forty thousand, eight hundred forty-two".