115029129 has 4 divisors (see below), whose sum is σ = 153372176. Its totient is φ = 76686084.

The previous prime is 115029121. The next prime is 115029137. The reversal of 115029129 is 921920511.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (115029121) and next prime (115029137).

It is not a de Polignac number, because 115029129 - 2³ = 115029121 is a prime.

It is a super-4 number, since 4×115029129⁴ (a number of 33 digits) contains 4444 as substring.

It is a Duffinian number.

It is a nialpdrome in base 8.

It is a junction number, because it is equal to n+sod(n) for n = 115029096 and 115029105.

It is not an unprimeable number, because it can be changed into a prime (115029121) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19171519 + ... + 19171524.

It is an arithmetic number, because the mean of its divisors is an integer number (38343044).

Almost surely, 2^115029129 is an apocalyptic number.

It is an amenable number.

115029129 is a deficient number, since it is larger than the sum of its proper divisors (38343047).

115029129 is an equidigital number, since it uses as much as digits as its factorization.

115029129 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38343046.

The product of its (nonzero) digits is 1620, while the sum is 30.

The square root of 115029129 is about 10725.1633553993. The cubic root of 115029129 is about 486.3354683968.

The spelling of 115029129 in words is "one hundred fifteen million, twenty-nine thousand, one hundred twenty-nine".