1523042540 has 12 divisors (see below), whose sum is σ = 3198389376. Its totient is φ = 609217008.

The previous prime is 1523042531. The next prime is 1523042569. The reversal of 1523042540 is 452403251.

It is a happy number.

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 3 ways as a sum of consecutive naturals, for example, 38076044 + ... + 38076083.

It is an arithmetic number, because the mean of its divisors is an integer number (266532448).

Almost surely, 2^1523042540 is an apocalyptic number.

1523042540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1523042540 is an abundant number, since it is smaller than the sum of its proper divisors (1675346836).

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

1523042540 is a wasteful number, since it uses less digits than its factorization.

1523042540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76152136 (or 76152134 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 26.

The square root of 1523042540 is about 39026.1776247687. The cubic root of 1523042540 is about 1150.5460645479.

Adding to 1523042540 its reverse (452403251), we get a palindrome (1975445791).

The spelling of 1523042540 in words is "one billion, five hundred twenty-three million, forty-two thousand, five hundred forty".