129016390 has 16 divisors (see below), whose sum is σ = 234530640. Its totient is φ = 51095200.

The previous prime is 129016387. The next prime is 129016471. The reversal of 129016390 is 93610921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 62860 + ... + 64879.

It is an arithmetic number, because the mean of its divisors is an integer number (14658165).

Almost surely, 2^129016390 is an apocalyptic number.

129016390 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129016390 is a deficient number, since it is larger than the sum of its proper divisors (105514250).

129016390 is a wasteful number, since it uses less digits than its factorization.

129016390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127847.

The product of its (nonzero) digits is 2916, while the sum is 31.

The square root of 129016390 is about 11358.5381982014. The cubic root of 129016390 is about 505.2988330321.

It can be divided in two parts, 12901 and 6390, that added together give a palindrome (19291).

The spelling of 129016390 in words is "one hundred twenty-nine million, sixteen thousand, three hundred ninety".