121834820 has 12 divisors (see below), whose sum is σ = 255853164. Its totient is φ = 48733920.

The previous prime is 121834807. The next prime is 121834837. The reversal of 121834820 is 28438121.

It can be written as a sum of positive squares in 2 ways, for example, as 38514436 + 83320384 = 6206^2 + 9128^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3045851 + ... + 3045890.

It is an arithmetic number, because the mean of its divisors is an integer number (21321097).

Almost surely, 2^121834820 is an apocalyptic number.

121834820 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121834820 is an abundant number, since it is smaller than the sum of its proper divisors (134018344).

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

121834820 is a wasteful number, since it uses less digits than its factorization.

121834820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6091750 (or 6091748 counting only the distinct ones).

The product of its (nonzero) digits is 3072, while the sum is 29.

The square root of 121834820 is about 11037.8811372473. The cubic root of 121834820 is about 495.7436294343.

The spelling of 121834820 in words is "one hundred twenty-one million, eight hundred thirty-four thousand, eight hundred twenty".