129189962 has 32 divisors (see below), whose sum is σ = 215279424. Its totient is φ = 57657600.

The previous prime is 129189959. The next prime is 129189979. The reversal of 129189962 is 269981921.

It is a super-2 number, since 2×129189962² = 33380092563122888, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 390137 + ... + 390467.

It is an arithmetic number, because the mean of its divisors is an integer number (6727482).

Almost surely, 2^129189962 is an apocalyptic number.

129189962 is a deficient number, since it is larger than the sum of its proper divisors (86089462).

129189962 is a wasteful number, since it uses less digits than its factorization.

129189962 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 614.

The product of its digits is 139968, while the sum is 47.

The square root of 129189962 is about 11366.1762259786. The cubic root of 129189962 is about 505.5253324891.

It can be divided in two parts, 129 and 189962, that added together give a palindrome (190091).

The spelling of 129189962 in words is "one hundred twenty-nine million, one hundred eighty-nine thousand, nine hundred sixty-two".