129873373 has 24 divisors (see below), whose sum is σ = 157642848. Its totient is φ = 106587936.

The previous prime is 129873371. The next prime is 129873407. The reversal of 129873373 is 373378921.

It is not a de Polignac number, because 129873373 - 2¹ = 129873371 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (43).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129873371) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 111090 + ... + 112252.

It is an arithmetic number, because the mean of its divisors is an integer number (6568452).

Almost surely, 2^129873373 is an apocalyptic number.

It is an amenable number.

129873373 is a deficient number, since it is larger than the sum of its proper divisors (27769475).

129873373 is a wasteful number, since it uses less digits than its factorization.

129873373 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1273 (or 1266 counting only the distinct ones).

The product of its digits is 190512, while the sum is 43.

The square root of 129873373 is about 11396.1999368210. The cubic root of 129873373 is about 506.4151698418.

The spelling of 129873373 in words is "one hundred twenty-nine million, eight hundred seventy-three thousand, three hundred seventy-three".