129403746 has 12 divisors (see below), whose sum is σ = 280374822. Its totient is φ = 43134576.

The previous prime is 129403721. The next prime is 129403751. The reversal of 129403746 is 647304921.

It can be written as a sum of positive squares in only one way, i.e., 77000625 + 52403121 = 8775^2 + 7239^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 129403746.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3594531 + ... + 3594566.

Almost surely, 2^129403746 is an apocalyptic number.

129403746 is an abundant number, since it is smaller than the sum of its proper divisors (150971076).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129403746 is a wasteful number, since it uses less digits than its factorization.

129403746 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7189105 (or 7189102 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 36.

The square root of 129403746 is about 11375.5767326321. The cubic root of 129403746 is about 505.8040271787.

The spelling of 129403746 in words is "one hundred twenty-nine million, four hundred three thousand, seven hundred forty-six".