129896402 has 8 divisors (see below), whose sum is σ = 195068412. Its totient is φ = 64873600.

The previous prime is 129896399. The next prime is 129896443. The reversal of 129896402 is 204698921.

It can be written as a sum of positive squares in 2 ways, for example, as 117917881 + 11978521 = 10859^2 + 3461^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 129896402.

It is an unprimeable number.

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, 35099 + ... + 38622.

Almost surely, 2^129896402 is an apocalyptic number.

129896402 is a deficient number, since it is larger than the sum of its proper divisors (65172010).

129896402 is an equidigital number, since it uses as much as digits as its factorization.

129896402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 74604.

The product of its (nonzero) digits is 62208, while the sum is 41.

The square root of 129896402 is about 11397.2102726939. The cubic root of 129896402 is about 506.4451003950.

It can be divided in two parts, 12989 and 6402, that added together give a palindrome (19391).

The spelling of 129896402 in words is "one hundred twenty-nine million, eight hundred ninety-six thousand, four hundred two".