115420621 has 2 divisors, whose sum is σ = 115420622. Its totient is φ = 115420620.

The previous prime is 115420619. The next prime is 115420631. The reversal of 115420621 is 126024511.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 81198121 + 34222500 = 9011^2 + 5850^2 .

It is a cyclic number.

It is not a de Polignac number, because 115420621 - 2¹ = 115420619 is a prime.

Together with 115420619, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 115420592 and 115420601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (115420631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 57710310 + 57710311.

It is an arithmetic number, because the mean of its divisors is an integer number (57710311).

Almost surely, 2^115420621 is an apocalyptic number.

It is an amenable number.

115420621 is a deficient number, since it is larger than the sum of its proper divisors (1).

115420621 is an equidigital number, since it uses as much as digits as its factorization.

115420621 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 480, while the sum is 22.

The square root of 115420621 is about 10743.3989500530. The cubic root of 115420621 is about 486.8865776531.

The spelling of 115420621 in words is "one hundred fifteen million, four hundred twenty thousand, six hundred twenty-one".