129887462 has 16 divisors (see below), whose sum is σ = 203636160. Its totient is φ = 62055168.

The previous prime is 129887441. The next prime is 129887479. The reversal of 129887462 is 264788921.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5918 + ... + 17169.

It is an arithmetic number, because the mean of its divisors is an integer number (12727260).

Almost surely, 2^129887462 is an apocalyptic number.

129887462 is a deficient number, since it is larger than the sum of its proper divisors (73748698).

129887462 is a wasteful number, since it uses less digits than its factorization.

129887462 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23215.

The product of its digits is 387072, while the sum is 47.

The square root of 129887462 is about 11396.8180647056. The cubic root of 129887462 is about 506.4334815896.

The spelling of 129887462 in words is "one hundred twenty-nine million, eight hundred eighty-seven thousand, four hundred sixty-two".