121245460 has 72 divisors (see below), whose sum is σ = 307238400. Its totient is φ = 39365568.

The previous prime is 121245427. The next prime is 121245461. The reversal of 121245460 is 64542121.

It is a happy number.

It is a super-2 number, since 2×121245460² = 29400923141223200, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121245461) 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 23 ways as a sum of consecutive naturals, for example, 49341 + ... + 51739.

It is an arithmetic number, because the mean of its divisors is an integer number (4267200).

Almost surely, 2^121245460 is an apocalyptic number.

121245460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 121245460, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (153619200).

121245460 is an abundant number, since it is smaller than the sum of its proper divisors (185992940).

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

121245460 is a wasteful number, since it uses less digits than its factorization.

121245460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2453 (or 2432 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 25.

The square root of 121245460 is about 11011.1516200623. The cubic root of 121245460 is about 494.9429720378.

Adding to 121245460 its reverse (64542121), we get a palindrome (185787581).

The spelling of 121245460 in words is "one hundred twenty-one million, two hundred forty-five thousand, four hundred sixty".