113917421 has 2 divisors, whose sum is σ = 113917422. Its totient is φ = 113917420.

The previous prime is 113917411. The next prime is 113917451. The reversal of 113917421 is 124719311.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 106894921 + 7022500 = 10339^2 + 2650^2 .

It is an emirp because it is prime and its reverse (124719311) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 113917421 - 2¹⁸ = 113655277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (113917411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 56958710 + 56958711.

It is an arithmetic number, because the mean of its divisors is an integer number (56958711).

Almost surely, 2^113917421 is an apocalyptic number.

It is an amenable number.

113917421 is a deficient number, since it is larger than the sum of its proper divisors (1).

113917421 is an equidigital number, since it uses as much as digits as its factorization.

113917421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1512, while the sum is 29.

The square root of 113917421 is about 10673.2104354782. The cubic root of 113917421 is about 484.7636514486.

The spelling of 113917421 in words is "one hundred thirteen million, nine hundred seventeen thousand, four hundred twenty-one".