121426443 has 12 divisors (see below), whose sum is σ = 177203208. Its totient is φ = 80115840.

The previous prime is 121426441. The next prime is 121426447. The reversal of 121426443 is 344624121.

It is a happy number.

121426443 is a `hidden beast` number, since 1 + 2 + 14 + 2 + 644 + 3 = 666.

It is not a de Polignac number, because 121426443 - 2¹ = 121426441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (121426441) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 68673 + ... + 70418.

It is an arithmetic number, because the mean of its divisors is an integer number (14766934).

Almost surely, 2^121426443 is an apocalyptic number.

121426443 is a deficient number, since it is larger than the sum of its proper divisors (55776765).

121426443 is a wasteful number, since it uses less digits than its factorization.

121426443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 139194 (or 139191 counting only the distinct ones).

The product of its digits is 4608, while the sum is 27.

The square root of 121426443 is about 11019.3667240908. The cubic root of 121426443 is about 495.1891165964.

The spelling of 121426443 in words is "one hundred twenty-one million, four hundred twenty-six thousand, four hundred forty-three".