1540420124 has 12 divisors (see below), whose sum is σ = 2812941264. Its totient is φ = 736722624.

The previous prime is 1540420111. The next prime is 1540420127. The reversal of 1540420124 is 4210240451.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a self number, because there is not a number n which added to its sum of digits gives 1540420124.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1540420127) 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, 8371757 + ... + 8371940.

It is an arithmetic number, because the mean of its divisors is an integer number (234411772).

Almost surely, 2^1540420124 is an apocalyptic number.

It is an amenable number.

1540420124 is a deficient number, since it is larger than the sum of its proper divisors (1272521140).

1540420124 is a wasteful number, since it uses less digits than its factorization.

1540420124 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16743724 (or 16743722 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 23.

The square root of 1540420124 is about 39248.1862510868. The cubic root of 1540420124 is about 1154.9053535882.

Adding to 1540420124 its reverse (4210240451), we get a palindrome (5750660575).

The spelling of 1540420124 in words is "one billion, five hundred forty million, four hundred twenty thousand, one hundred twenty-four".