129596741 has 4 divisors (see below), whose sum is σ = 129753900. Its totient is φ = 129439584.

The previous prime is 129596723. The next prime is 129596767. The reversal of 129596741 is 147695921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 147695921 = 379 ⋅389699.

It can be written as a sum of positive squares in 2 ways, for example, as 69472225 + 60124516 = 8335^2 + 7754^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-129596741 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 129596692 and 129596701.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129596791) 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 in 3 ways as a sum of consecutive naturals, for example, 77336 + ... + 78993.

It is an arithmetic number, because the mean of its divisors is an integer number (32438475).

Almost surely, 2^129596741 is an apocalyptic number.

It is an amenable number.

129596741 is a deficient number, since it is larger than the sum of its proper divisors (157159).

129596741 is an equidigital number, since it uses as much as digits as its factorization.

129596741 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157158.

The product of its digits is 136080, while the sum is 44.

The square root of 129596741 is about 11384.0564387217. The cubic root of 129596741 is about 506.0553572519.

The spelling of 129596741 in words is "one hundred twenty-nine million, five hundred ninety-six thousand, seven hundred forty-one".