121340160 has 144 divisors (see below), whose sum is σ = 430711680. Its totient is φ = 32348160.

The previous prime is 121340159. The next prime is 121340201. The reversal of 121340160 is 61043121.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (144).

It is a Harshad number since it is a multiple of its sum of digits (18).

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, 32805 + ... + 36315.

Almost surely, 2^121340160 is an apocalyptic number.

121340160 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 121340160, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (215355840).

121340160 is an abundant number, since it is smaller than the sum of its proper divisors (309371520).

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

121340160 is an equidigital number, since it uses as much as digits as its factorization.

121340160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3541 (or 3521 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 121340160 is about 11015.4509667104. The cubic root of 121340160 is about 495.0717985844.

Adding to 121340160 its reverse (61043121), we get a palindrome (182383281).

The spelling of 121340160 in words is "one hundred twenty-one million, three hundred forty thousand, one hundred sixty".