129699070 has 32 divisors (see below), whose sum is σ = 244270080. Its totient is φ = 49489440.

The previous prime is 129699067. The next prime is 129699083. The reversal of 129699070 is 70996921.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 141915 + ... + 142825.

It is an arithmetic number, because the mean of its divisors is an integer number (7633440).

Almost surely, 2^129699070 is an apocalyptic number.

129699070 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129699070 is a deficient number, since it is larger than the sum of its proper divisors (114571010).

129699070 is a wasteful number, since it uses less digits than its factorization.

129699070 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1560.

The product of its (nonzero) digits is 61236, while the sum is 43.

The square root of 129699070 is about 11388.5499515961. The cubic root of 129699070 is about 506.1885152174.

The spelling of 129699070 in words is "one hundred twenty-nine million, six hundred ninety-nine thousand, seventy".