129970 has 16 divisors (see below), whose sum is σ = 240408. Its totient is φ = 50560.

The previous prime is 129967. The next prime is 129971. The reversal of 129970 is 79921.

It can be written as a sum of positive squares in 4 ways, for example, as 35721 + 94249 = 189^2 + 307^2 .

It is not an unprimeable number, because it can be changed into a prime (129971) 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, 252 + ... + 568.

2¹²⁹⁹⁷⁰ is an apocalyptic number.

129970 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129970 is a deficient number, since it is larger than the sum of its proper divisors (110438).

129970 is a wasteful number, since it uses less digits than its factorization.

129970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365.

The product of its (nonzero) digits is 1134, while the sum is 28.

The square root of 129970 is about 360.5135226313. The cubic root of 129970 is about 50.6540731243.

It can be divided in two parts, 1299 and 70, that added together give a square (1369 = 37²).

The spelling of 129970 in words is "one hundred twenty-nine thousand, nine hundred seventy".