451140120442 has 16 divisors (see below), whose sum is σ = 738518768064. Its totient is φ = 204983280000.

The previous prime is 451140120373. The next prime is 451140120443. The reversal of 451140120442 is 244021041154.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 451140120442.

It is not an unprimeable number, because it can be changed into a prime (451140120443) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3963159 + ... + 4075402.

It is an arithmetic number, because the mean of its divisors is an integer number (46157423004).

Almost surely, 2^451140120442 is an apocalyptic number.

451140120442 is a deficient number, since it is larger than the sum of its proper divisors (287378647622).

451140120442 is a wasteful number, since it uses less digits than its factorization.

451140120442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8041125.

The product of its (nonzero) digits is 5120, while the sum is 28.

Adding to 451140120442 its reverse (244021041154), we get a palindrome (695161161596).

The spelling of 451140120442 in words is "four hundred fifty-one billion, one hundred forty million, one hundred twenty thousand, four hundred forty-two".