143721454042 has 4 divisors (see below), whose sum is σ = 215582181066. Its totient is φ = 71860727020.

The previous prime is 143721454039. The next prime is 143721454049. The reversal of 143721454042 is 240454127341.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 106452765441 + 37268688601 = 326271^2 + 193051^2 .

It is a junction number, because it is equal to n+sod(n) for n = 143721453992 and 143721454010.

It is not an unprimeable number, because it can be changed into a prime (143721454049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 35930363509 + ... + 35930363512.

Almost surely, 2^143721454042 is an apocalyptic number.

143721454042 is a deficient number, since it is larger than the sum of its proper divisors (71860727024).

143721454042 is an equidigital number, since it uses as much as digits as its factorization.

143721454042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71860727023.

The product of its (nonzero) digits is 107520, while the sum is 37.

The spelling of 143721454042 in words is "one hundred forty-three billion, seven hundred twenty-one million, four hundred fifty-four thousand, forty-two".