234205729 has 2 divisors, whose sum is σ = 234205730. Its totient is φ = 234205728.

The previous prime is 234205709. The next prime is 234205733. The reversal of 234205729 is 927502432.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 172975104 + 61230625 = 13152^2 + 7825^2 .

It is a cyclic number.

It is not a de Polignac number, because 234205729 - 2²³ = 225817121 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 234205694 and 234205703.

It is not a weakly prime, because it can be changed into another prime (234205709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 117102864 + 117102865.

It is an arithmetic number, because the mean of its divisors is an integer number (117102865).

Almost surely, 2^234205729 is an apocalyptic number.

It is an amenable number.

234205729 is a deficient number, since it is larger than the sum of its proper divisors (1).

234205729 is an equidigital number, since it uses as much as digits as its factorization.

234205729 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 30240, while the sum is 34.

The square root of 234205729 is about 15303.7815261458. The cubic root of 234205729 is about 616.4045532586.

The spelling of 234205729 in words is "two hundred thirty-four million, two hundred five thousand, seven hundred twenty-nine".