451212043442 has 4 divisors (see below), whose sum is σ = 676818065166. Its totient is φ = 225606021720.

The previous prime is 451212043439. The next prime is 451212043511. The reversal of 451212043442 is 244340212154.

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., 270390640081 + 180821403361 = 519991^2 + 425231^2 .

It is a junction number, because it is equal to n+sod(n) for n = 451212043399 and 451212043408.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 112803010859 + ... + 112803010862.

Almost surely, 2^451212043442 is an apocalyptic number.

451212043442 is a deficient number, since it is larger than the sum of its proper divisors (225606021724).

451212043442 is a wasteful number, since it uses less digits than its factorization.

451212043442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 225606021723.

The product of its (nonzero) digits is 30720, while the sum is 32.

Adding to 451212043442 its reverse (244340212154), we get a palindrome (695552255596).

The spelling of 451212043442 in words is "four hundred fifty-one billion, two hundred twelve million, forty-three thousand, four hundred forty-two".