451402342 has 24 divisors (see below), whose sum is σ = 739292400. Its totient is φ = 206439408.

The previous prime is 451402327. The next prime is 451402349. The reversal of 451402342 is 243204154.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (451402349) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 10159 + ... + 31717.

It is an arithmetic number, because the mean of its divisors is an integer number (30803850).

Almost surely, 2^451402342 is an apocalyptic number.

451402342 is a deficient number, since it is larger than the sum of its proper divisors (287890058).

451402342 is a wasteful number, since it uses less digits than its factorization.

451402342 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21628 (or 21609 counting only the distinct ones).

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

The square root of 451402342 is about 21246.2312422698. The cubic root of 451402342 is about 767.1046276065.

Adding to 451402342 its reverse (243204154), we get a palindrome (694606496).

The spelling of 451402342 in words is "four hundred fifty-one million, four hundred two thousand, three hundred forty-two".