15421015241 has 2 divisors, whose sum is σ = 15421015242. Its totient is φ = 15421015240.

The previous prime is 15421015213. The next prime is 15421015249. The reversal of 15421015241 is 14251012451.

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., 15376992016 + 44023225 = 124004^2 + 6635^2 .

It is a cyclic number.

It is not a de Polignac number, because 15421015241 - 2¹⁸ = 15420753097 is a prime.

It is a super-2 number, since 2×15421015241² (a number of 21 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 15421015241.

It is not a weakly prime, because it can be changed into another prime (15421015249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 7710507620 + 7710507621.

It is an arithmetic number, because the mean of its divisors is an integer number (7710507621).

Almost surely, 2^15421015241 is an apocalyptic number.

It is an amenable number.

15421015241 is a deficient number, since it is larger than the sum of its proper divisors (1).

15421015241 is an equidigital number, since it uses as much as digits as its factorization.

15421015241 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1600, while the sum is 26.

Adding to 15421015241 its reverse (14251012451), we get a palindrome (29672027692).

The spelling of 15421015241 in words is "fifteen billion, four hundred twenty-one million, fifteen thousand, two hundred forty-one".