129207054 has 16 divisors (see below), whose sum is σ = 269649792. Its totient is φ = 41196408.

The previous prime is 129207053. The next prime is 129207073. The reversal of 129207054 is 450702921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129207053) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 468004 + ... + 468279.

It is an arithmetic number, because the mean of its divisors is an integer number (16853112).

Almost surely, 2^129207054 is an apocalyptic number.

129207054 is an abundant number, since it is smaller than the sum of its proper divisors (140442738).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

129207054 is a wasteful number, since it uses less digits than its factorization.

129207054 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 936311.

The product of its (nonzero) digits is 5040, while the sum is 30.

The square root of 129207054 is about 11366.9280810604. The cubic root of 129207054 is about 505.5476253923.

Adding to 129207054 its reverse (450702921), we get a palindrome (579909975).

The spelling of 129207054 in words is "one hundred twenty-nine million, two hundred seven thousand, fifty-four".