129488534 has 24 divisors (see below), whose sum is σ = 234287568. Its totient is φ = 52572240.

The previous prime is 129488533. The next prime is 129488573. The reversal of 129488534 is 435884921.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (129488531) 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, 7757 + ... + 17864.

It is an arithmetic number, because the mean of its divisors is an integer number (9761982).

Almost surely, 2^129488534 is an apocalyptic number.

129488534 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

129488534 is a deficient number, since it is larger than the sum of its proper divisors (104799034).

129488534 is a wasteful number, since it uses less digits than its factorization.

129488534 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25668 (or 25649 counting only the distinct ones).

The product of its digits is 276480, while the sum is 44.

The square root of 129488534 is about 11379.3028784719. The cubic root of 129488534 is about 505.9144741325.

The spelling of 129488534 in words is "one hundred twenty-nine million, four hundred eighty-eight thousand, five hundred thirty-four".