121242412 has 12 divisors (see below), whose sum is σ = 217349496. Its totient is φ = 59142560.

The previous prime is 121242409. The next prime is 121242427. The reversal of 121242412 is 214242121.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 121242412.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 369478 + ... + 369805.

It is an arithmetic number, because the mean of its divisors is an integer number (18112458).

Almost surely, 2^121242412 is an apocalyptic number.

It is an amenable number.

121242412 is a deficient number, since it is larger than the sum of its proper divisors (96107084).

121242412 is a wasteful number, since it uses less digits than its factorization.

121242412 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 739328 (or 739326 counting only the distinct ones).

The product of its digits is 256, while the sum is 19.

The square root of 121242412 is about 11011.0132140507. The cubic root of 121242412 is about 494.9388245318.

Adding to 121242412 its reverse (214242121), we get a palindrome (335484533).

The spelling of 121242412 in words is "one hundred twenty-one million, two hundred forty-two thousand, four hundred twelve".