121810430 has 32 divisors (see below), whose sum is σ = 255317184. Its totient is φ = 40974336.

The previous prime is 121810427. The next prime is 121810453. The reversal of 121810430 is 34018121.

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 15 ways as a sum of consecutive naturals, for example, 12707 + ... + 20126.

It is an arithmetic number, because the mean of its divisors is an integer number (7978662).

Almost surely, 2^121810430 is an apocalyptic number.

121810430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121810430 is an abundant number, since it is smaller than the sum of its proper divisors (133506754).

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

121810430 is a wasteful number, since it uses less digits than its factorization.

121810430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32900.

The product of its (nonzero) digits is 192, while the sum is 20.

The square root of 121810430 is about 11036.7762503369. The cubic root of 121810430 is about 495.7105464070.

Adding to 121810430 its reverse (34018121), we get a palindrome (155828551).

The spelling of 121810430 in words is "one hundred twenty-one million, eight hundred ten thousand, four hundred thirty".