121442460 has 48 divisors (see below), whose sum is σ = 345623712. Its totient is φ = 31852800.

The previous prime is 121442443. The next prime is 121442491. The reversal of 121442460 is 64244121.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 121442460.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12931 + ... + 20250.

It is an arithmetic number, because the mean of its divisors is an integer number (7200494).

Almost surely, 2^121442460 is an apocalyptic number.

121442460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121442460 is an abundant number, since it is smaller than the sum of its proper divisors (224181252).

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

121442460 is a wasteful number, since it uses less digits than its factorization.

121442460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33254 (or 33252 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 24.

The square root of 121442460 is about 11020.0934660283. The cubic root of 121442460 is about 495.2108886123.

Adding to 121442460 its reverse (64244121), we get a palindrome (185686581).

The spelling of 121442460 in words is "one hundred twenty-one million, four hundred forty-two thousand, four hundred sixty".