1540044342 has 24 divisors (see below), whose sum is σ = 3341898144. Its totient is φ = 512558064.

The previous prime is 1540044313. The next prime is 1540044349. The reversal of 1540044342 is 2434400451.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1540044349) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 53758 + ... + 77265.

It is an arithmetic number, because the mean of its divisors is an integer number (139245756).

Almost surely, 2^1540044342 is an apocalyptic number.

1540044342 is an abundant number, since it is smaller than the sum of its proper divisors (1801853802).

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

1540044342 is a wasteful number, since it uses less digits than its factorization.

1540044342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 131684 (or 131681 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 27.

The square root of 1540044342 is about 39243.3987060244. The cubic root of 1540044342 is about 1154.8114337690.

Adding to 1540044342 its reverse (2434400451), we get a palindrome (3974444793).

The spelling of 1540044342 in words is "one billion, five hundred forty million, forty-four thousand, three hundred forty-two".