116137921 has 2 divisors, whose sum is σ = 116137922. Its totient is φ = 116137920.

The previous prime is 116137849. The next prime is 116137939. The reversal of 116137921 is 129731611.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 115347600 + 790321 = 10740^2 + 889^2 .

It is an emirp because it is prime and its reverse (129731611) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 116137921 - 2⁹ = 116137409 is a prime.

It is not a weakly prime, because it can be changed into another prime (116137991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 58068960 + 58068961.

It is an arithmetic number, because the mean of its divisors is an integer number (58068961).

Almost surely, 2^116137921 is an apocalyptic number.

It is an amenable number.

116137921 is a deficient number, since it is larger than the sum of its proper divisors (1).

116137921 is an equidigital number, since it uses as much as digits as its factorization.

116137921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2268, while the sum is 31.

The square root of 116137921 is about 10776.7305338864. The cubic root of 116137921 is about 487.8931070745.

The spelling of 116137921 in words is "one hundred sixteen million, one hundred thirty-seven thousand, nine hundred twenty-one".