121543433 has 4 divisors (see below), whose sum is σ = 132592848. Its totient is φ = 110494020.

The previous prime is 121543403. The next prime is 121543441. The reversal of 121543433 is 334345121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 334345121 = 11 ⋅30395011.

It is a cyclic number.

It is not a de Polignac number, because 121543433 - 2⁶ = 121543369 is a prime.

It is a super-2 number, since 2×121543433² = 29545612210850978, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (121543403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5524691 + ... + 5524712.

It is an arithmetic number, because the mean of its divisors is an integer number (33148212).

Almost surely, 2^121543433 is an apocalyptic number.

It is an amenable number.

121543433 is a deficient number, since it is larger than the sum of its proper divisors (11049415).

121543433 is a wasteful number, since it uses less digits than its factorization.

121543433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11049414.

The product of its digits is 4320, while the sum is 26.

The square root of 121543433 is about 11024.6738273747. The cubic root of 121543433 is about 495.3480978366.

Adding to 121543433 its reverse (334345121), we get a palindrome (455888554).

The spelling of 121543433 in words is "one hundred twenty-one million, five hundred forty-three thousand, four hundred thirty-three".