129061974 has 8 divisors (see below), whose sum is σ = 258123960. Its totient is φ = 43020656.

The previous prime is 129061949. The next prime is 129061981. The reversal of 129061974 is 479160921.

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

129061974 is an admirable number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10755159 + ... + 10755170.

It is an arithmetic number, because the mean of its divisors is an integer number (32265495).

Almost surely, 2^129061974 is an apocalyptic number.

129061974 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

129061974 is a wasteful number, since it uses less digits than its factorization.

129061974 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21510334.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 129061974 is about 11360.5446172268. The cubic root of 129061974 is about 505.3583366600.

The spelling of 129061974 in words is "one hundred twenty-nine million, sixty-one thousand, nine hundred seventy-four".