121440030 has 16 divisors (see below), whose sum is σ = 291456144. Its totient is φ = 32384000.

The previous prime is 121440029. The next prime is 121440047. The reversal of 121440030 is 30044121.

It is a Harshad number since it is a multiple of its sum of digits (15).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 121439991 and 121440009.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2023971 + ... + 2024030.

It is an arithmetic number, because the mean of its divisors is an integer number (18216009).

Almost surely, 2^121440030 is an apocalyptic number.

121440030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

121440030 is an abundant number, since it is smaller than the sum of its proper divisors (170016114).

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

121440030 is a wasteful number, since it uses less digits than its factorization.

121440030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4048011.

The product of its (nonzero) digits is 96, while the sum is 15.

The square root of 121440030 is about 11019.9832123284. The cubic root of 121440030 is about 495.2075856202.

Adding to 121440030 its reverse (30044121), we get a palindrome (151484151).

The spelling of 121440030 in words is "one hundred twenty-one million, four hundred forty thousand, thirty".