1540512242 has 16 divisors (see below), whose sum is σ = 2374607232. Its totient is φ = 749000880.

The previous prime is 1540512241. The next prime is 1540512251. The reversal of 1540512242 is 2422150451.

It is not an unprimeable number, because it can be changed into a prime (1540512241) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 147617 + ... + 157707.

It is an arithmetic number, because the mean of its divisors is an integer number (148412952).

Almost surely, 2^1540512242 is an apocalyptic number.

1540512242 is a deficient number, since it is larger than the sum of its proper divisors (834094990).

1540512242 is a wasteful number, since it uses less digits than its factorization.

1540512242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12193.

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 1540512242 is about 39249.3597654790. The cubic root of 1540512242 is about 1154.9283744618.

Adding to 1540512242 its reverse (2422150451), we get a palindrome (3962662693).

The spelling of 1540512242 in words is "one billion, five hundred forty million, five hundred twelve thousand, two hundred forty-two".