121543000454 has 8 divisors (see below), whose sum is σ = 193038883128. Its totient is φ = 57196706080.

The previous prime is 121543000433. The next prime is 121543000459. The reversal of 121543000454 is 454000345121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×121543000454² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121543000459) 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, 1787397032 + ... + 1787397099.

It is an arithmetic number, because the mean of its divisors is an integer number (24129860391).

Almost surely, 2^121543000454 is an apocalyptic number.

121543000454 is a deficient number, since it is larger than the sum of its proper divisors (71495882674).

121543000454 is a wasteful number, since it uses less digits than its factorization.

121543000454 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3574794150.

The product of its (nonzero) digits is 9600, while the sum is 29.

Adding to 121543000454 its reverse (454000345121), we get a palindrome (575543345575).

The spelling of 121543000454 in words is "one hundred twenty-one billion, five hundred forty-three million, four hundred fifty-four", and thus it is an aban number.