129842693 has 2 divisors, whose sum is σ = 129842694. Its totient is φ = 129842692.

The previous prime is 129842689. The next prime is 129842707. The reversal of 129842693 is 396248921.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 100661089 + 29181604 = 10033^2 + 5402^2 .

It is a cyclic number.

It is not a de Polignac number, because 129842693 - 2² = 129842689 is a prime.

It is equal to p_7369856 and since 129842693 and 7369856 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (129842093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 64921346 + 64921347.

It is an arithmetic number, because the mean of its divisors is an integer number (64921347).

Almost surely, 2^129842693 is an apocalyptic number.

It is an amenable number.

129842693 is a deficient number, since it is larger than the sum of its proper divisors (1).

129842693 is an equidigital number, since it uses as much as digits as its factorization.

129842693 is an evil number, because the sum of its binary digits is even.

The product of its digits is 186624, while the sum is 44.

The square root of 129842693 is about 11394.8537945864. The cubic root of 129842693 is about 506.3752898658.

The spelling of 129842693 in words is "one hundred twenty-nine million, eight hundred forty-two thousand, six hundred ninety-three".