121440612 has 24 divisors (see below), whose sum is σ = 283626112. Its totient is φ = 40442400.

The previous prime is 121440611. The next prime is 121440659. The reversal of 121440612 is 216044121.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (121440611) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 10662 + ... + 18882.

Almost surely, 2^121440612 is an apocalyptic number.

121440612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

121440612 is an abundant number, since it is smaller than the sum of its proper divisors (162185500).

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

121440612 is a wasteful number, since it uses less digits than its factorization.

121440612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9459 (or 9457 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 21.

The square root of 121440612 is about 11020.0096188706. The cubic root of 121440612 is about 495.2083767112.

Adding to 121440612 its reverse (216044121), we get a palindrome (337484733).

The spelling of 121440612 in words is "one hundred twenty-one million, four hundred forty thousand, six hundred twelve".