129851007 has 32 divisors (see below), whose sum is σ = 207277056. Its totient is φ = 71260800.

The previous prime is 129851003. The next prime is 129851011. The reversal of 129851007 is 700158921.

It is an interprime number because it is at equal distance from previous prime (129851003) and next prime (129851011).

It is not a de Polignac number, because 129851007 - 2² = 129851003 is a prime.

It is a super-2 number, since 2×129851007² = 33722568037828098, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129851003) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 19882 + ... + 25592.

It is an arithmetic number, because the mean of its divisors is an integer number (6477408).

Almost surely, 2^129851007 is an apocalyptic number.

129851007 is a deficient number, since it is larger than the sum of its proper divisors (77426049).

129851007 is a wasteful number, since it uses less digits than its factorization.

129851007 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5791.

The product of its (nonzero) digits is 5040, while the sum is 33.

The square root of 129851007 is about 11395.2186025543. The cubic root of 129851007 is about 506.3860975958.

The spelling of 129851007 in words is "one hundred twenty-nine million, eight hundred fifty-one thousand, seven".