129474061 has 4 divisors (see below), whose sum is σ = 135103392. Its totient is φ = 123844732.

The previous prime is 129474047. The next prime is 129474077. The reversal of 129474061 is 160474921.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 160474921 = 89 ⋅1803089.

It is a cyclic number.

It is not a de Polignac number, because 129474061 - 2⁵ = 129474029 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129474661) by changing a digit.

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, 2814631 + ... + 2814676.

It is an arithmetic number, because the mean of its divisors is an integer number (33775848).

Almost surely, 2^129474061 is an apocalyptic number.

It is an amenable number.

129474061 is a deficient number, since it is larger than the sum of its proper divisors (5629331).

129474061 is an equidigital number, since it uses as much as digits as its factorization.

129474061 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5629330.

The product of its (nonzero) digits is 12096, while the sum is 34.

The square root of 129474061 is about 11378.6669254355. Note that the first 3 decimals coincide. The cubic root of 129474061 is about 505.8956246566.

The spelling of 129474061 in words is "one hundred twenty-nine million, four hundred seventy-four thousand, sixty-one".