121245830 has 8 divisors (see below), whose sum is σ = 218242512. Its totient is φ = 48498328.

The previous prime is 121245797. The next prime is 121245833. The reversal of 121245830 is 38542121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a self number, because there is not a number n which added to its sum of digits gives 121245830.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121245833) by changing a digit.

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, 6062282 + ... + 6062301.

It is an arithmetic number, because the mean of its divisors is an integer number (27280314).

Almost surely, 2^121245830 is an apocalyptic number.

121245830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121245830 is a deficient number, since it is larger than the sum of its proper divisors (96996682).

121245830 is a wasteful number, since it uses less digits than its factorization.

121245830 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12124590.

The product of its (nonzero) digits is 1920, while the sum is 26.

The square root of 121245830 is about 11011.1684211985. The cubic root of 121245830 is about 494.9434755033.

Adding to 121245830 its reverse (38542121), we get a palindrome (159787951).

The spelling of 121245830 in words is "one hundred twenty-one million, two hundred forty-five thousand, eight hundred thirty".