1540408942 has 8 divisors (see below), whose sum is σ = 2314111032. Its totient is φ = 769038600.

The previous prime is 1540408939. The next prime is 1540408943. The reversal of 1540408942 is 2498040451.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1540408943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 581284 + ... + 583927.

It is an arithmetic number, because the mean of its divisors is an integer number (289263879).

Almost surely, 2^1540408942 is an apocalyptic number.

1540408942 is a deficient number, since it is larger than the sum of its proper divisors (773702090).

1540408942 is a wasteful number, since it uses less digits than its factorization.

1540408942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1165874.

The product of its (nonzero) digits is 46080, while the sum is 37.

The square root of 1540408942 is about 39248.0437983857. The cubic root of 1540408942 is about 1154.9025590729.

The spelling of 1540408942 in words is "one billion, five hundred forty million, four hundred eight thousand, nine hundred forty-two".