2540012503421 has 8 divisors (see below), whose sum is σ = 2632075477920. Its totient is φ = 2448247951408.

The previous prime is 2540012503397. The next prime is 2540012503471. The reversal of 2540012503421 is 1243052100452.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 2540012503421 - 2³⁸ = 2265134596477 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2540012503471) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 74588291 + ... + 74622336.

It is an arithmetic number, because the mean of its divisors is an integer number (329009434740).

Almost surely, 2^{2540012503421} is an apocalyptic number.

It is an amenable number.

2540012503421 is a deficient number, since it is larger than the sum of its proper divisors (92062974499).

2540012503421 is a wasteful number, since it uses less digits than its factorization.

2540012503421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149211243.

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 2540012503421 its reverse (1243052100452), we get a palindrome (3783064603873).

The spelling of 2540012503421 in words is "two trillion, five hundred forty billion, twelve million, five hundred three thousand, four hundred twenty-one".