5421400512123 has 8 divisors (see below), whose sum is σ = 7234168108608. Its totient is φ = 3611449961864.

The previous prime is 5421400512079. The next prime is 5421400512133. The reversal of 5421400512123 is 3212150041245.

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

It is a cyclic number.

It is not a de Polignac number, because 5421400512123 - 2¹⁰ = 5421400511099 is a prime.

It is not an unprimeable number, because it can be changed into a prime (5421400512133) 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, 704257065 + ... + 704264762.

It is an arithmetic number, because the mean of its divisors is an integer number (904271013576).

Almost surely, 2^{5421400512123} is an apocalyptic number.

5421400512123 is a deficient number, since it is larger than the sum of its proper divisors (1812767596485).

5421400512123 is a wasteful number, since it uses less digits than its factorization.

5421400512123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1408523113.

The product of its (nonzero) digits is 9600, while the sum is 30.

Adding to 5421400512123 its reverse (3212150041245), we get a palindrome (8633550553368).

The spelling of 5421400512123 in words is "five trillion, four hundred twenty-one billion, four hundred million, five hundred twelve thousand, one hundred twenty-three".