121234402143 has 48 divisors (see below), whose sum is σ = 180660040704. Its totient is φ = 78297468480.

The previous prime is 121234402139. The next prime is 121234402151. The reversal of 121234402143 is 341204432121.

121234402143 is a `hidden beast` number, since 1 + 2 + 1 + 2 + 3 + 440 + 214 + 3 = 666.

It is not a de Polignac number, because 121234402143 - 2² = 121234402139 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (121234402043) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 30996358 + ... + 31000268.

It is an arithmetic number, because the mean of its divisors is an integer number (3763750848).

Almost surely, 2^121234402143 is an apocalyptic number.

121234402143 is a deficient number, since it is larger than the sum of its proper divisors (59425638561).

121234402143 is a wasteful number, since it uses less digits than its factorization.

121234402143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4596 (or 4593 counting only the distinct ones).

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

Adding to 121234402143 its reverse (341204432121), we get a palindrome (462438834264).

The spelling of 121234402143 in words is "one hundred twenty-one billion, two hundred thirty-four million, four hundred two thousand, one hundred forty-three".