115266421 has 2 divisors, whose sum is σ = 115266422. Its totient is φ = 115266420.

The previous prime is 115266413. The next prime is 115266427. The reversal of 115266421 is 124662511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62631396 + 52635025 = 7914^2 + 7255^2 .

It is an emirp because it is prime and its reverse (124662511) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 115266421 - 2³ = 115266413 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 115266421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115266427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57633210 + 57633211.

It is an arithmetic number, because the mean of its divisors is an integer number (57633211).

Almost surely, 2^115266421 is an apocalyptic number.

It is an amenable number.

115266421 is a deficient number, since it is larger than the sum of its proper divisors (1).

115266421 is an equidigital number, since it uses as much as digits as its factorization.

115266421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2880, while the sum is 28.

The square root of 115266421 is about 10736.2200517687. The cubic root of 115266421 is about 486.6696569425.

The spelling of 115266421 in words is "one hundred fifteen million, two hundred sixty-six thousand, four hundred twenty-one".