786132121 has 2 divisors, whose sum is σ = 786132122. Its totient is φ = 786132120.

The previous prime is 786132091. The next prime is 786132133. The reversal of 786132121 is 121231687.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 747256896 + 38875225 = 27336^2 + 6235^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-786132121 is a prime.

It is not a weakly prime, because it can be changed into another prime (786132181) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 393066060 + 393066061.

It is an arithmetic number, because the mean of its divisors is an integer number (393066061).

Almost surely, 2^786132121 is an apocalyptic number.

It is an amenable number.

786132121 is a deficient number, since it is larger than the sum of its proper divisors (1).

786132121 is an equidigital number, since it uses as much as digits as its factorization.

786132121 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4032, while the sum is 31.

The square root of 786132121 is about 28038.0477387424. The cubic root of 786132121 is about 922.9223868501.

The spelling of 786132121 in words is "seven hundred eighty-six million, one hundred thirty-two thousand, one hundred twenty-one".