1540255242 has 16 divisors (see below), whose sum is σ = 3088643040. Its totient is φ = 512062992.

The previous prime is 1540255229. The next prime is 1540255259. The reversal of 1540255242 is 2425520451.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 336393 + ... + 340940.

It is an arithmetic number, because the mean of its divisors is an integer number (193040190).

Almost surely, 2^1540255242 is an apocalyptic number.

1540255242 is an abundant number, since it is smaller than the sum of its proper divisors (1548387798).

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

1540255242 is a wasteful number, since it uses less digits than its factorization.

1540255242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677717.

The product of its (nonzero) digits is 16000, while the sum is 30.

The square root of 1540255242 is about 39246.0856901679. The cubic root of 1540255242 is about 1154.8641462370.

Adding to 1540255242 its reverse (2425520451), we get a palindrome (3965775693).

The spelling of 1540255242 in words is "one billion, five hundred forty million, two hundred fifty-five thousand, two hundred forty-two".