121434020 has 48 divisors (see below), whose sum is σ = 275304960. Its totient is φ = 44854656.

The previous prime is 121434011. The next prime is 121434023. The reversal of 121434020 is 20434121.

It is a self number, because there is not a number n which added to its sum of digits gives 121434020.

It is not an unprimeable number, because it can be changed into a prime (121434023) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 8789 + ... + 17891.

It is an arithmetic number, because the mean of its divisors is an integer number (5735520).

Almost surely, 2^121434020 is an apocalyptic number.

121434020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121434020, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (137652480).

121434020 is an abundant number, since it is smaller than the sum of its proper divisors (153870940).

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

121434020 is a wasteful number, since it uses less digits than its factorization.

121434020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9164 (or 9162 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 121434020 is about 11019.7105225137. The cubic root of 121434020 is about 495.1994163021.

Adding to 121434020 its reverse (20434121), we get a palindrome (141868141).

The spelling of 121434020 in words is "one hundred twenty-one million, four hundred thirty-four thousand, twenty".