129490274 has 8 divisors (see below), whose sum is σ = 194700240. Its totient is φ = 64590196.

The previous prime is 129490271. The next prime is 129490279. The reversal of 129490274 is 472094921.

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

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (129490271) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 76424 + ... + 78099.

It is an arithmetic number, because the mean of its divisors is an integer number (24337530).

Almost surely, 2^129490274 is an apocalyptic number.

129490274 is a deficient number, since it is larger than the sum of its proper divisors (65209966).

129490274 is a wasteful number, since it uses less digits than its factorization.

129490274 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 154944.

The product of its (nonzero) digits is 36288, while the sum is 38.

The square root of 129490274 is about 11379.3793328107. The cubic root of 129490274 is about 505.9167401947.

The spelling of 129490274 in words is "one hundred twenty-nine million, four hundred ninety thousand, two hundred seventy-four".