121635043 has 2 divisors, whose sum is σ = 121635044. Its totient is φ = 121635042.

The previous prime is 121635029. The next prime is 121635061. The reversal of 121635043 is 340536121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121635043 - 2¹⁷ = 121503971 is a prime.

It is a super-2 number, since 2×121635043² = 29590167371223698, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 121634999 and 121635017.

It is not a weakly prime, because it can be changed into another prime (121635343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60817521 + 60817522.

It is an arithmetic number, because the mean of its divisors is an integer number (60817522).

Almost surely, 2^121635043 is an apocalyptic number.

121635043 is a deficient number, since it is larger than the sum of its proper divisors (1).

121635043 is an equidigital number, since it uses as much as digits as its factorization.

121635043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2160, while the sum is 25.

The square root of 121635043 is about 11028.8278162278. The cubic root of 121635043 is about 495.4725182238.

The spelling of 121635043 in words is "one hundred twenty-one million, six hundred thirty-five thousand, forty-three".