121230540 has 48 divisors (see below), whose sum is σ = 377163360. Its totient is φ = 32328000.

The previous prime is 121230521. The next prime is 121230541. The reversal of 121230540 is 45032121.

121230540 is a `hidden beast` number, since 1 + 2 + 123 + 0 + 540 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (121230541) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111711 + ... + 112790.

It is an arithmetic number, because the mean of its divisors is an integer number (7857570).

Almost surely, 2^121230540 is an apocalyptic number.

121230540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121230540 is an abundant number, since it is smaller than the sum of its proper divisors (255932820).

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

121230540 is a wasteful number, since it uses less digits than its factorization.

121230540 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 224519 (or 224511 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 121230540 is about 11010.4741042337. The cubic root of 121230540 is about 494.9226692788.

Adding to 121230540 its reverse (45032121), we get a palindrome (166262661).

The spelling of 121230540 in words is "one hundred twenty-one million, two hundred thirty thousand, five hundred forty".