451233442 has 12 divisors (see below), whose sum is σ = 743976198. Its totient is φ = 205106000.

The previous prime is 451233439. The next prime is 451233449. The reversal of 451233442 is 244332154.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 451180081 + 53361 = 21241^2 + 231^2 .

It is a super-2 number, since 2×451233442² = 407223238358334728, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 451233442.

It is not an unprimeable number, because it can be changed into a prime (451233449) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 932059 + ... + 932542.

Almost surely, 2^451233442 is an apocalyptic number.

451233442 is a deficient number, since it is larger than the sum of its proper divisors (292742756).

451233442 is a wasteful number, since it uses less digits than its factorization.

451233442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1864625 (or 1864614 counting only the distinct ones).

The product of its digits is 11520, while the sum is 28.

The square root of 451233442 is about 21242.2560477930. The cubic root of 451233442 is about 767.0089405128.

Adding to 451233442 its reverse (244332154), we get a palindrome (695565596).

The spelling of 451233442 in words is "four hundred fifty-one million, two hundred thirty-three thousand, four hundred forty-two".