129764943 has 32 divisors (see below), whose sum is σ = 239685120. Its totient is φ = 67409280.

The previous prime is 129764941. The next prime is 129764953. The reversal of 129764943 is 349467921.

It is a happy number.

It is not a de Polignac number, because 129764943 - 2¹ = 129764941 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129764941) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29130 + ... + 33287.

It is an arithmetic number, because the mean of its divisors is an integer number (7490160).

Almost surely, 2^129764943 is an apocalyptic number.

129764943 is a deficient number, since it is larger than the sum of its proper divisors (109920177).

129764943 is a wasteful number, since it uses less digits than its factorization.

129764943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62444 (or 62438 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 129764943 is about 11391.4416559099. The cubic root of 129764943 is about 506.2741969230.

The spelling of 129764943 in words is "one hundred twenty-nine million, seven hundred sixty-four thousand, nine hundred forty-three".