121103240 has 32 divisors (see below), whose sum is σ = 288512280. Its totient is φ = 45591552.

The previous prime is 121103221. The next prime is 121103243. The reversal of 121103240 is 42301121.

It can be written as a sum of positive squares in 4 ways, for example, as 120516484 + 586756 = 10978^2 + 766^2 .

It is not an unprimeable number, because it can be changed into a prime (121103243) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 88367 + ... + 89726.

Almost surely, 2^121103240 is an apocalyptic number.

121103240 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121103240 is an abundant number, since it is smaller than the sum of its proper divisors (167409040).

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

121103240 is a wasteful number, since it uses less digits than its factorization.

121103240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178121 (or 178117 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 14.

The square root of 121103240 is about 11004.6917267137. The cubic root of 121103240 is about 494.7493748781.

Adding to 121103240 its reverse (42301121), we get a palindrome (163404361).

The spelling of 121103240 in words is "one hundred twenty-one million, one hundred three thousand, two hundred forty".