121045843 has 2 divisors, whose sum is σ = 121045844. Its totient is φ = 121045842.

The previous prime is 121045829. The next prime is 121045861. The reversal of 121045843 is 348540121.

It is a weak prime.

It is an emirp because it is prime and its reverse (348540121) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-121045843 is a prime.

It is a super-2 number, since 2×121045843² = 29304192215161298, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121045543) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60522921 + 60522922.

It is an arithmetic number, because the mean of its divisors is an integer number (60522922).

Almost surely, 2^121045843 is an apocalyptic number.

121045843 is a deficient number, since it is larger than the sum of its proper divisors (1).

121045843 is an equidigital number, since it uses as much as digits as its factorization.

121045843 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3840, while the sum is 28.

The square root of 121045843 is about 11002.0835753961. The cubic root of 121045843 is about 494.6712002085.

Adding to 121045843 its reverse (348540121), we get a palindrome (469585964).

The spelling of 121045843 in words is "one hundred twenty-one million, forty-five thousand, eight hundred forty-three".