121450643 has 2 divisors, whose sum is σ = 121450644. Its totient is φ = 121450642.

The previous prime is 121450639. The next prime is 121450657. The reversal of 121450643 is 346054121.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 121450643 - 2² = 121450639 is a prime.

It is a super-2 number, since 2×121450643² = 29500517370226898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (121450673) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 60725321 + 60725322.

It is an arithmetic number, because the mean of its divisors is an integer number (60725322).

Almost surely, 2^121450643 is an apocalyptic number.

121450643 is a deficient number, since it is larger than the sum of its proper divisors (1).

121450643 is an equidigital number, since it uses as much as digits as its factorization.

121450643 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2880, while the sum is 26.

The square root of 121450643 is about 11020.4647361171. The cubic root of 121450643 is about 495.2220110805. Note that the first 3 decimals are identical.

The spelling of 121450643 in words is "one hundred twenty-one million, four hundred fifty thousand, six hundred forty-three".