1540423131424 has 24 divisors (see below), whose sum is σ = 3032737666560. Its totient is φ = 770204041536.

The previous prime is 1540423131413. The next prime is 1540423131433. The reversal of 1540423131424 is 4241313240451.

It is a super-2 number, since 2×1540423131424² (a number of 25 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 1540423131424.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4658817 + ... + 4978495.

It is an arithmetic number, because the mean of its divisors is an integer number (126364069440).

Almost surely, 2^{1540423131424} is an apocalyptic number.

It is an amenable number.

1540423131424 is a deficient number, since it is larger than the sum of its proper divisors (1492314535136).

1540423131424 is a wasteful number, since it uses less digits than its factorization.

1540423131424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 470272 (or 470264 counting only the distinct ones).

The product of its (nonzero) digits is 46080, while the sum is 34.

Adding to 1540423131424 its reverse (4241313240451), we get a palindrome (5781736371875).

The spelling of 1540423131424 in words is "one trillion, five hundred forty billion, four hundred twenty-three million, one hundred thirty-one thousand, four hundred twenty-four".