129150706 has 4 divisors (see below), whose sum is σ = 193726062. Its totient is φ = 64575352.

The previous prime is 129150677. The next prime is 129150709. The reversal of 129150706 is 607051921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 607051921 = 7 ⋅86721703.

It can be written as a sum of positive squares in only one way, i.e., 128029225 + 1121481 = 11315^2 + 1059^2 .

It is not an unprimeable number, because it can be changed into a prime (129150709) 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 as a sum of consecutive naturals, namely, 32287675 + ... + 32287678.

Almost surely, 2^129150706 is an apocalyptic number.

129150706 is a deficient number, since it is larger than the sum of its proper divisors (64575356).

129150706 is an equidigital number, since it uses as much as digits as its factorization.

129150706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64575355.

The product of its (nonzero) digits is 3780, while the sum is 31.

The square root of 129150706 is about 11364.4492167461. The cubic root of 129150706 is about 505.4741238850.

The spelling of 129150706 in words is "one hundred twenty-nine million, one hundred fifty thousand, seven hundred six".