129752667 has 12 divisors (see below), whose sum is σ = 204458904. Its totient is φ = 78637920.

The previous prime is 129752657. The next prime is 129752677. The reversal of 129752667 is 766257921.

It is an interprime number because it is at equal distance from previous prime (129752657) and next prime (129752677).

It is not a de Polignac number, because 129752667 - 2¹⁵ = 129719899 is a prime.

It is a super-2 number, since 2×129752667² = 33671509187225778, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (129752657) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 655218 + ... + 655415.

It is an arithmetic number, because the mean of its divisors is an integer number (17038242).

Almost surely, 2^129752667 is an apocalyptic number.

129752667 is a deficient number, since it is larger than the sum of its proper divisors (74706237).

129752667 is a wasteful number, since it uses less digits than its factorization.

129752667 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1310650 (or 1310647 counting only the distinct ones).

The product of its digits is 317520, while the sum is 45.

The square root of 129752667 is about 11390.9028175997. The cubic root of 129752667 is about 506.2582315991.

The spelling of 129752667 in words is "one hundred twenty-nine million, seven hundred fifty-two thousand, six hundred sixty-seven".