129036297 has 8 divisors (see below), whose sum is σ = 185282944. Its totient is φ = 79406928.

The previous prime is 129036269. The next prime is 129036311. The reversal of 129036297 is 792630921.

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

It is not a de Polignac number, because 129036297 - 2¹⁰ = 129035273 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 3308623 = 129036297 / (1 + 2 + 9 + 0 + 3 + 6 + 2 + 9 + 7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (129036227) 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, 1654273 + ... + 1654350.

It is an arithmetic number, because the mean of its divisors is an integer number (23160368).

Almost surely, 2^129036297 is an apocalyptic number.

It is an amenable number.

129036297 is a deficient number, since it is larger than the sum of its proper divisors (56246647).

129036297 is a wasteful number, since it uses less digits than its factorization.

129036297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3308639.

The product of its (nonzero) digits is 40824, while the sum is 39.

The square root of 129036297 is about 11359.4144655435. The cubic root of 129036297 is about 505.3248205999.

It can be divided in two parts, 12 and 9036297, that added together give a palindrome (9036309).

The spelling of 129036297 in words is "one hundred twenty-nine million, thirty-six thousand, two hundred ninety-seven".