121307340 has 288 divisors, whose sum is σ = 448616448. Its totient is φ = 24393600.

The previous prime is 121307339. The next prime is 121307353. The reversal of 121307340 is 43703121.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 3913125 + ... + 3913155.

It is an arithmetic number, because the mean of its divisors is an integer number (1557696).

Almost surely, 2^121307340 is an apocalyptic number.

121307340 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 121307340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (224308224).

121307340 is an abundant number, since it is smaller than the sum of its proper divisors (327309108).

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

121307340 is a wasteful number, since it uses less digits than its factorization.

121307340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 90 (or 59 counting only the distinct ones).

The product of its (nonzero) digits is 504, while the sum is 21.

The square root of 121307340 is about 11013.9611402983. The cubic root of 121307340 is about 495.0271590037.

The spelling of 121307340 in words is "one hundred twenty-one million, three hundred seven thousand, three hundred forty".