121440260 has 24 divisors (see below), whose sum is σ = 255429720. Its totient is φ = 48498944.

The previous prime is 121440257. The next prime is 121440271. The reversal of 121440260 is 62044121.

It can be written as a sum of positive squares in 4 ways, for example, as 49224256 + 72216004 = 7016^2 + 8498^2 .

It is a Harshad number since it is a multiple of its sum of digits (20).

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9056 + ... + 18024.

It is an arithmetic number, because the mean of its divisors is an integer number (10642905).

Almost surely, 2^121440260 is an apocalyptic number.

121440260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121440260 is an abundant number, since it is smaller than the sum of its proper divisors (133989460).

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

121440260 is a wasteful number, since it uses less digits than its factorization.

121440260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9655 (or 9653 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 121440260 is about 11019.9936479111. The cubic root of 121440260 is about 495.2078982509.

Adding to 121440260 its reverse (62044121), we get a palindrome (183484381).

The spelling of 121440260 in words is "one hundred twenty-one million, four hundred forty thousand, two hundred sixty".