1542510140 has 12 divisors (see below), whose sum is σ = 3239271336. Its totient is φ = 617004048.

The previous prime is 1542510139. The next prime is 1542510143. The reversal of 1542510140 is 410152451.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1542510143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 38562734 + ... + 38562773.

It is an arithmetic number, because the mean of its divisors is an integer number (269939278).

Almost surely, 2^1542510140 is an apocalyptic number.

1542510140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1542510140 is an abundant number, since it is smaller than the sum of its proper divisors (1696761196).

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

1542510140 is a wasteful number, since it uses less digits than its factorization.

1542510140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77125516 (or 77125514 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 23.

The square root of 1542510140 is about 39274.8028639228. The cubic root of 1542510140 is about 1155.4274362326.

Adding to 1542510140 its reverse (410152451), we get a palindrome (1952662591).

The spelling of 1542510140 in words is "one billion, five hundred forty-two million, five hundred ten thousand, one hundred forty".