121329126 has 12 divisors (see below), whose sum is σ = 262879812. Its totient is φ = 40443036.

The previous prime is 121329107. The next prime is 121329157. The reversal of 121329126 is 621923121.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 121329126.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3370236 + ... + 3370271.

It is an arithmetic number, because the mean of its divisors is an integer number (21906651).

Almost surely, 2^121329126 is an apocalyptic number.

121329126 is an abundant number, since it is smaller than the sum of its proper divisors (141550686).

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

121329126 is a wasteful number, since it uses less digits than its factorization.

121329126 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6740515 (or 6740512 counting only the distinct ones).

The product of its digits is 1296, while the sum is 27.

The square root of 121329126 is about 11014.9501133686. The cubic root of 121329126 is about 495.0567917699.

The spelling of 121329126 in words is "one hundred twenty-one million, three hundred twenty-nine thousand, one hundred twenty-six".