129454870 has 16 divisors (see below), whose sum is σ = 234697680. Its totient is φ = 51408864.

The previous prime is 129454849. The next prime is 129454877. The reversal of 129454870 is 78454921.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129454877) 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, 45177 + ... + 47956.

It is an arithmetic number, because the mean of its divisors is an integer number (14668605).

Almost surely, 2^129454870 is an apocalyptic number.

129454870 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

129454870 is a deficient number, since it is larger than the sum of its proper divisors (105242810).

129454870 is a wasteful number, since it uses less digits than its factorization.

129454870 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 93279.

The product of its (nonzero) digits is 80640, while the sum is 40.

The square root of 129454870 is about 11377.8236055935. The cubic root of 129454870 is about 505.8706283431.

The spelling of 129454870 in words is "one hundred twenty-nine million, four hundred fifty-four thousand, eight hundred seventy".