121245340 has 48 divisors (see below), whose sum is σ = 264628224. Its totient is φ = 46612800.

The previous prime is 121245307. The next prime is 121245353. The reversal of 121245340 is 43542121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102955 + ... + 104125.

It is an arithmetic number, because the mean of its divisors is an integer number (5513088).

Almost surely, 2^121245340 is an apocalyptic number.

121245340 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 121245340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (132314112).

121245340 is an abundant number, since it is smaller than the sum of its proper divisors (143382884).

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

121245340 is a wasteful number, since it uses less digits than its factorization.

121245340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1378 (or 1376 counting only the distinct ones).

The product of its (nonzero) digits is 960, while the sum is 22.

The square root of 121245340 is about 11011.1461710396. The cubic root of 121245340 is about 494.9428087515.

Adding to 121245340 its reverse (43542121), we get a palindrome (164787461).

The spelling of 121245340 in words is "one hundred twenty-one million, two hundred forty-five thousand, three hundred forty".