121770543 has 8 divisors (see below), whose sum is σ = 162412848. Its totient is φ = 81154304.

The previous prime is 121770499. The next prime is 121770547. The reversal of 121770543 is 345077121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 121770543 - 2⁶ = 121770479 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 121770543.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121770547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11521 + ... + 19397.

It is an arithmetic number, because the mean of its divisors is an integer number (20301606).

Almost surely, 2^121770543 is an apocalyptic number.

121770543 is a deficient number, since it is larger than the sum of its proper divisors (40642305).

121770543 is an equidigital number, since it uses as much as digits as its factorization.

121770543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13033.

The product of its (nonzero) digits is 5880, while the sum is 30.

The square root of 121770543 is about 11034.9690982802. The cubic root of 121770543 is about 495.6564334570.

The spelling of 121770543 in words is "one hundred twenty-one million, seven hundred seventy thousand, five hundred forty-three".