121028470 has 16 divisors (see below), whose sum is σ = 221544720. Its totient is φ = 47590624.

The previous prime is 121028459. The next prime is 121028503. The reversal of 121028470 is 74820121.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 101977 + ... + 103156.

It is an arithmetic number, because the mean of its divisors is an integer number (13846545).

Almost surely, 2^121028470 is an apocalyptic number.

121028470 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121028470 is a deficient number, since it is larger than the sum of its proper divisors (100516250).

121028470 is a wasteful number, since it uses less digits than its factorization.

121028470 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 205199.

The product of its (nonzero) digits is 896, while the sum is 25.

The square root of 121028470 is about 11001.2940147966. The cubic root of 121028470 is about 494.6475333240.

Adding to 121028470 its reverse (74820121), we get a palindrome (195848591).

The spelling of 121028470 in words is "one hundred twenty-one million, twenty-eight thousand, four hundred seventy".