451340242 has 16 divisors (see below), whose sum is σ = 717229080. Its totient is φ = 212278528.

The previous prime is 451340237. The next prime is 451340243. The reversal of 451340242 is 242043154.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 428117481 + 23222761 = 20691^2 + 4819^2 .

It is not an unprimeable number, because it can be changed into a prime (451340243) 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, 113268 + ... + 117184.

Almost surely, 2^451340242 is an apocalyptic number.

451340242 is a deficient number, since it is larger than the sum of its proper divisors (265888838).

451340242 is a wasteful number, since it uses less digits than its factorization.

451340242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7325.

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 451340242 is about 21244.7697563424. The cubic root of 451340242 is about 767.0694488036.

Adding to 451340242 its reverse (242043154), we get a palindrome (693383396).

The spelling of 451340242 in words is "four hundred fifty-one million, three hundred forty thousand, two hundred forty-two".