129706274 has 16 divisors (see below), whose sum is σ = 205370880. Its totient is φ = 61268400.

The previous prime is 129706273. The next prime is 129706289. The reversal of 129706274 is 472607921.

It is a Harshad number since it is a multiple of its sum of digits (38).

It is not an unprimeable number, because it can be changed into a prime (129706273) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9599 + ... + 18749.

It is an arithmetic number, because the mean of its divisors is an integer number (12835680).

Almost surely, 2^129706274 is an apocalyptic number.

129706274 is a deficient number, since it is larger than the sum of its proper divisors (75664606).

129706274 is a wasteful number, since it uses less digits than its factorization.

129706274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9545.

The product of its (nonzero) digits is 42336, while the sum is 38.

The square root of 129706274 is about 11388.8662297878. The cubic root of 129706274 is about 506.1978869489.

The spelling of 129706274 in words is "one hundred twenty-nine million, seven hundred six thousand, two hundred seventy-four".