5144121391 has 2 divisors, whose sum is σ = 5144121392. Its totient is φ = 5144121390.

The previous prime is 5144121383. The next prime is 5144121397. The reversal of 5144121391 is 1931214415.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5144121391 - 2³ = 5144121383 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5144121397) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2572060695 + 2572060696.

It is an arithmetic number, because the mean of its divisors is an integer number (2572060696).

Almost surely, 2^5144121391 is an apocalyptic number.

5144121391 is a deficient number, since it is larger than the sum of its proper divisors (1).

5144121391 is an equidigital number, since it uses as much as digits as its factorization.

5144121391 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4320, while the sum is 31.

The square root of 5144121391 is about 71722.5305674584. The cubic root of 5144121391 is about 1726.2501772250.

The spelling of 5144121391 in words is "five billion, one hundred forty-four million, one hundred twenty-one thousand, three hundred ninety-one".