121643160 has 64 divisors (see below), whose sum is σ = 386402400. Its totient is φ = 30529536.

The previous prime is 121643147. The next prime is 121643167. The reversal of 121643160 is 61346121.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a self number, because there is not a number n which added to its sum of digits gives 121643160.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121643167) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27775 + ... + 31854.

Almost surely, 2^121643160 is an apocalyptic number.

121643160 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121643160 is an abundant number, since it is smaller than the sum of its proper divisors (264759240).

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

121643160 is a wasteful number, since it uses less digits than its factorization.

121643160 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59660 (or 59656 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 24.

The square root of 121643160 is about 11029.1958002386. The cubic root of 121643160 is about 495.4835393377.

Adding to 121643160 its reverse (61346121), we get a palindrome (182989281).

The spelling of 121643160 in words is "one hundred twenty-one million, six hundred forty-three thousand, one hundred sixty".