129071030 has 16 divisors (see below), whose sum is σ = 253448784. Its totient is φ = 46934880.

The previous prime is 129071027. The next prime is 129071039. The reversal of 129071030 is 30170921.

It is a junction number, because it is equal to n+sod(n) for n = 129070987 and 129071005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129071039) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 586577 + ... + 586796.

It is an arithmetic number, because the mean of its divisors is an integer number (15840549).

Almost surely, 2^129071030 is an apocalyptic number.

129071030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129071030 is a deficient number, since it is larger than the sum of its proper divisors (124377754).

129071030 is a wasteful number, since it uses less digits than its factorization.

129071030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1173391.

The product of its (nonzero) digits is 378, while the sum is 23.

The square root of 129071030 is about 11360.9431826763. The cubic root of 129071030 is about 505.3701563513.

The spelling of 129071030 in words is "one hundred twenty-nine million, seventy-one thousand, thirty".