451242 has 48 divisors (see below), whose sum is σ = 1111968. Its totient is φ = 131040.

The previous prime is 451207. The next prime is 451249. The reversal of 451242 is 242154.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is not an unprimeable number, because it can be changed into a prime (451249) by changing a digit.

451242 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8488 + ... + 8540.

It is an arithmetic number, because the mean of its divisors is an integer number (23166).

2⁴⁵¹²⁴² is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 451242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (555984).

451242 is an abundant number, since it is smaller than the sum of its proper divisors (660726).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

451242 is a wasteful number, since it uses less digits than its factorization.

451242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115 (or 112 counting only the distinct ones).

The product of its digits is 320, while the sum is 18.

The square root of 451242 is about 671.7454875174. The cubic root of 451242 is about 76.7013789460.

Adding to 451242 its reverse (242154), we get a palindrome (693396).

It can be divided in two parts, 4512 and 42, that added together give a palindrome (4554).

The spelling of 451242 in words is "four hundred fifty-one thousand, two hundred forty-two".