15126421241 has 2 divisors, whose sum is σ = 15126421242. Its totient is φ = 15126421240.

The previous prime is 15126421229. The next prime is 15126421243. The reversal of 15126421241 is 14212462151.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11664864016 + 3461557225 = 108004^2 + 58835^2 .

It is a cyclic number.

It is not a de Polignac number, because 15126421241 - 2²⁶ = 15059312377 is a prime.

Together with 15126421243, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (15126421243) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7563210620 + 7563210621.

It is an arithmetic number, because the mean of its divisors is an integer number (7563210621).

Almost surely, 2^15126421241 is an apocalyptic number.

It is an amenable number.

15126421241 is a deficient number, since it is larger than the sum of its proper divisors (1).

15126421241 is an equidigital number, since it uses as much as digits as its factorization.

15126421241 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3840, while the sum is 29.

Adding to 15126421241 its reverse (14212462151), we get a palindrome (29338883392).

The spelling of 15126421241 in words is "fifteen billion, one hundred twenty-six million, four hundred twenty-one thousand, two hundred forty-one".