129746450 has 48 divisors (see below), whose sum is σ = 253376640. Its totient is φ = 49336320.

The previous prime is 129746429. The next prime is 129746467. The reversal of 129746450 is 54647921.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 295331 + ... + 295769.

It is an arithmetic number, because the mean of its divisors is an integer number (5278680).

Almost surely, 2^129746450 is an apocalyptic number.

129746450 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129746450 is a deficient number, since it is larger than the sum of its proper divisors (123630190).

129746450 is a wasteful number, since it uses less digits than its factorization.

129746450 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 731 (or 726 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 38.

The square root of 129746450 is about 11390.6299211238. The cubic root of 129746450 is about 506.2501458111.

The spelling of 129746450 in words is "one hundred twenty-nine million, seven hundred forty-six thousand, four hundred fifty".