129304442 has 8 divisors (see below), whose sum is σ = 195877332. Its totient is φ = 64012000.

The previous prime is 129304433. The next prime is 129304457. The reversal of 129304442 is 244403921.

It can be written as a sum of positive squares in 2 ways, for example, as 79192201 + 50112241 = 8899^2 + 7079^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 319859 + ... + 320262.

Almost surely, 2^129304442 is an apocalyptic number.

129304442 is a deficient number, since it is larger than the sum of its proper divisors (66572890).

129304442 is a wasteful number, since it uses less digits than its factorization.

129304442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 640224.

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 129304442 is about 11371.2111052429. The cubic root of 129304442 is about 505.6746099645.

The spelling of 129304442 in words is "one hundred twenty-nine million, three hundred four thousand, four hundred forty-two".