129071054 has 32 divisors (see below), whose sum is σ = 229970880. Its totient is φ = 53157888.

The previous prime is 129071053. The next prime is 129071057. The reversal of 129071054 is 450170921.

It is a Harshad number since it is a multiple of its sum of digits (29).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129071053) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 103724 + ... + 104960.

It is an arithmetic number, because the mean of its divisors is an integer number (7186590).

Almost surely, 2^129071054 is an apocalyptic number.

129071054 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

129071054 is a deficient number, since it is larger than the sum of its proper divisors (100899826).

129071054 is a wasteful number, since it uses less digits than its factorization.

129071054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1532.

The product of its (nonzero) digits is 2520, while the sum is 29.

The square root of 129071054 is about 11360.9442389266. The cubic root of 129071054 is about 505.3701876748.

The spelling of 129071054 in words is "one hundred twenty-nine million, seventy-one thousand, fifty-four".