121434543 has 12 divisors (see below), whose sum is σ = 176298408. Its totient is φ = 80544240.

The previous prime is 121434541. The next prime is 121434559. The reversal of 121434543 is 345434121.

It is a happy number.

It is not a de Polignac number, because 121434543 - 2¹ = 121434541 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121434541) 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, 32473 + ... + 36018.

It is an arithmetic number, because the mean of its divisors is an integer number (14691534).

Almost surely, 2^121434543 is an apocalyptic number.

121434543 is a deficient number, since it is larger than the sum of its proper divisors (54863865).

121434543 is a wasteful number, since it uses less digits than its factorization.

121434543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68694 (or 68691 counting only the distinct ones).

The product of its digits is 5760, while the sum is 27.

The square root of 121434543 is about 11019.7342526941. The cubic root of 121434543 is about 495.2001272202.

Adding to 121434543 its reverse (345434121), we get a palindrome (466868664).

The spelling of 121434543 in words is "one hundred twenty-one million, four hundred thirty-four thousand, five hundred forty-three".