129163054 has 4 divisors (see below), whose sum is σ = 193744584. Its totient is φ = 64581526.

The previous prime is 129163051. The next prime is 129163057. The reversal of 129163054 is 450361921.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 450361921 = 19 ⋅23703259.

It is an interprime number because it is at equal distance from previous prime (129163051) and next prime (129163057).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129163051) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 32290762 + ... + 32290765.

It is an arithmetic number, because the mean of its divisors is an integer number (48436146).

Almost surely, 2^129163054 is an apocalyptic number.

129163054 is a deficient number, since it is larger than the sum of its proper divisors (64581530).

129163054 is an equidigital number, since it uses as much as digits as its factorization.

129163054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 64581529.

The product of its (nonzero) digits is 6480, while the sum is 31.

The square root of 129163054 is about 11364.9924769003. The cubic root of 129163054 is about 505.4902327028.

The spelling of 129163054 in words is "one hundred twenty-nine million, one hundred sixty-three thousand, fifty-four".