129794740234 has 4 divisors (see below), whose sum is σ = 194692110354. Its totient is φ = 64897370116.

The previous prime is 129794740217. The next prime is 129794740237. The reversal of 129794740234 is 432047497921.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 432047497921 = 13 ⋅33234422917.

It can be written as a sum of positive squares in only one way, i.e., 103063471225 + 26731269009 = 321035^2 + 163497^2 .

It is not an unprimeable number, because it can be changed into a prime (129794740237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32448685057 + ... + 32448685060.

Almost surely, 2^129794740234 is an apocalyptic number.

129794740234 is a deficient number, since it is larger than the sum of its proper divisors (64897370120).

129794740234 is an equidigital number, since it uses as much as digits as its factorization.

129794740234 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64897370119.

The product of its (nonzero) digits is 3048192, while the sum is 52.

The spelling of 129794740234 in words is "one hundred twenty-nine billion, seven hundred ninety-four million, seven hundred forty thousand, two hundred thirty-four".