121410240 has 336 divisors, whose sum is σ = 469087200. Its totient is φ = 26492928.

The previous prime is 121410239. The next prime is 121410241. The reversal of 121410240 is 42014121.

It is an interprime number because it is at equal distance from previous prime (121410239) and next prime (121410241).

It is a tau number, because it is divible by the number of its divisors (336).

It is a Harshad number since it is a multiple of its sum of digits (15).

It is not an unprimeable number, because it can be changed into a prime (121410241) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1364116 + ... + 1364204.

Almost surely, 2^121410240 is an apocalyptic number.

121410240 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 121410240, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (234543600).

121410240 is an abundant number, since it is smaller than the sum of its proper divisors (347676960).

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

121410240 is a wasteful number, since it uses less digits than its factorization.

121410240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152 (or 135 counting only the distinct ones).

The product of its (nonzero) digits is 64, while the sum is 15.

The square root of 121410240 is about 11018.6314939742. The cubic root of 121410240 is about 495.1670898012.

Adding to 121410240 its reverse (42014121), we get a palindrome (163424361).

The spelling of 121410240 in words is "one hundred twenty-one million, four hundred ten thousand, two hundred forty".