129752294 has 24 divisors (see below), whose sum is σ = 226884168. Its totient is φ = 55490400.

The previous prime is 129752291. The next prime is 129752297. The reversal of 129752294 is 492257921.

It is an interprime number because it is at equal distance from previous prime (129752291) and next prime (129752297).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129752291) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 57797 + ... + 59999.

It is an arithmetic number, because the mean of its divisors is an integer number (9453507).

Almost surely, 2^129752294 is an apocalyptic number.

129752294 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

129752294 is a deficient number, since it is larger than the sum of its proper divisors (97131874).

129752294 is a wasteful number, since it uses less digits than its factorization.

129752294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2820 (or 2813 counting only the distinct ones).

The product of its digits is 90720, while the sum is 41.

The square root of 129752294 is about 11390.8864448734. The cubic root of 129752294 is about 506.2577464851.

The spelling of 129752294 in words is "one hundred twenty-nine million, seven hundred fifty-two thousand, two hundred ninety-four".