129711790 has 16 divisors (see below), whose sum is σ = 251441568. Its totient is φ = 47893536.

The previous prime is 129711787. The next prime is 129711793. The reversal of 129711790 is 97117921.

It is an interprime number because it is at equal distance from previous prime (129711787) and next prime (129711793).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129711793) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 498762 + ... + 499021.

It is an arithmetic number, because the mean of its divisors is an integer number (15715098).

Almost surely, 2^129711790 is an apocalyptic number.

129711790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129711790 is a deficient number, since it is larger than the sum of its proper divisors (121729778).

129711790 is a wasteful number, since it uses less digits than its factorization.

129711790 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 997803.

The product of its (nonzero) digits is 7938, while the sum is 37.

The square root of 129711790 is about 11389.1083935486. The cubic root of 129711790 is about 506.2050625153.

The spelling of 129711790 in words is "one hundred twenty-nine million, seven hundred eleven thousand, seven hundred ninety".