129042654 has 24 divisors (see below), whose sum is σ = 279467352. Its totient is φ = 39705120.

The previous prime is 129042653. The next prime is 129042671. The reversal of 129042654 is 456240921.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129042653) 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, 62617 + ... + 64644.

It is an arithmetic number, because the mean of its divisors is an integer number (11644473).

Almost surely, 2^129042654 is an apocalyptic number.

129042654 is an abundant number, since it is smaller than the sum of its proper divisors (150424698).

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

129042654 is a wasteful number, since it uses less digits than its factorization.

129042654 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 127292 (or 127279 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 33.

The square root of 129042654 is about 11359.6942740551. The cubic root of 129042654 is about 505.3331187744. Note that the first 3 decimals are identical.

The spelling of 129042654 in words is "one hundred twenty-nine million, forty-two thousand, six hundred fifty-four".