121843723 has 2 divisors, whose sum is σ = 121843724. Its totient is φ = 121843722.

The previous prime is 121843699. The next prime is 121843753. The reversal of 121843723 is 327348121.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121843723 is a prime.

It is not a weakly prime, because it can be changed into another prime (121843753) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60921861 + 60921862.

It is an arithmetic number, because the mean of its divisors is an integer number (60921862).

Almost surely, 2^121843723 is an apocalyptic number.

121843723 is a deficient number, since it is larger than the sum of its proper divisors (1).

121843723 is an equidigital number, since it uses as much as digits as its factorization.

121843723 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 31.

The square root of 121843723 is about 11038.2844228621. The cubic root of 121843723 is about 495.7557045210.

The spelling of 121843723 in words is "one hundred twenty-one million, eight hundred forty-three thousand, seven hundred twenty-three".