121770560 has 28 divisors (see below), whose sum is σ = 289966908. Its totient is φ = 48708096.

The previous prime is 121770547. The next prime is 121770581. The reversal of 121770560 is 65077121.

It can be written as a sum of positive squares in 2 ways, for example, as 46566976 + 75203584 = 6824^2 + 8672^2 .

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 189947 + ... + 190586.

It is an arithmetic number, because the mean of its divisors is an integer number (10355961).

Almost surely, 2^121770560 is an apocalyptic number.

121770560 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

121770560 is an abundant number, since it is smaller than the sum of its proper divisors (168196348).

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

121770560 is an equidigital number, since it uses as much as digits as its factorization.

121770560 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380550 (or 380540 counting only the distinct ones).

The product of its (nonzero) digits is 2940, while the sum is 29.

The square root of 121770560 is about 11034.9698685588. The cubic root of 121770560 is about 495.6564565227.

The spelling of 121770560 in words is "one hundred twenty-one million, seven hundred seventy thousand, five hundred sixty".