129146464 has 12 divisors (see below), whose sum is σ = 254257164. Its totient is φ = 64573216.

The previous prime is 129146443. The next prime is 129146491. The reversal of 129146464 is 464641921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2017882 + ... + 2017945.

It is an arithmetic number, because the mean of its divisors is an integer number (21188097).

Almost surely, 2^129146464 is an apocalyptic number.

It is an amenable number.

129146464 is a deficient number, since it is larger than the sum of its proper divisors (125110700).

129146464 is an equidigital number, since it uses as much as digits as its factorization.

129146464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4035837 (or 4035829 counting only the distinct ones).

The product of its digits is 41472, while the sum is 37.

The square root of 129146464 is about 11364.2625805637. The cubic root of 129146464 is about 505.4685896664.

The spelling of 129146464 in words is "one hundred twenty-nine million, one hundred forty-six thousand, four hundred sixty-four".