129015383 has 6 divisors (see below), whose sum is σ = 150079176. Its totient is φ = 110584572.

The previous prime is 129015373. The next prime is 129015407. The reversal of 129015383 is 383510921.

It is not a de Polignac number, because 129015383 - 2⁶ = 129015319 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129015323) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1316435 + ... + 1316532.

It is an arithmetic number, because the mean of its divisors is an integer number (25013196).

Almost surely, 2^129015383 is an apocalyptic number.

129015383 is a deficient number, since it is larger than the sum of its proper divisors (21063793).

129015383 is an equidigital number, since it uses as much as digits as its factorization.

129015383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2632981 (or 2632974 counting only the distinct ones).

The product of its (nonzero) digits is 6480, while the sum is 32.

The square root of 129015383 is about 11358.4938702277. The cubic root of 129015383 is about 505.2975183742.

The spelling of 129015383 in words is "one hundred twenty-nine million, fifteen thousand, three hundred eighty-three".