1301426251 has 2 divisors, whose sum is σ = 1301426252. Its totient is φ = 1301426250.

The previous prime is 1301426233. The next prime is 1301426257. The reversal of 1301426251 is 1526241031.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 1301426251 - 2¹⁹ = 1300901963 is a prime.

It is not a weakly prime, because it can be changed into another prime (1301426257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 650713125 + 650713126.

It is an arithmetic number, because the mean of its divisors is an integer number (650713126).

Almost surely, 2^1301426251 is an apocalyptic number.

1301426251 is a deficient number, since it is larger than the sum of its proper divisors (1).

1301426251 is an equidigital number, since it uses as much as digits as its factorization.

1301426251 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1440, while the sum is 25.

The square root of 1301426251 is about 36075.2858755132. The cubic root of 1301426251 is about 1091.7918654407.

Adding to 1301426251 its reverse (1526241031), we get a palindrome (2827667282).

The spelling of 1301426251 in words is "one billion, three hundred one million, four hundred twenty-six thousand, two hundred fifty-one".