457942 has 8 divisors (see below), whose sum is σ = 689832. Its totient is φ = 228000.

The previous prime is 457913. The next prime is 457943. The reversal of 457942 is 249754.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (457943) by changing a digit.

457942 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 517 + ... + 1087.

It is an arithmetic number, because the mean of its divisors is an integer number (86229).

2⁴⁵⁷⁹⁴² is an apocalyptic number.

457942 is a deficient number, since it is larger than the sum of its proper divisors (231890).

457942 is a wasteful number, since it uses less digits than its factorization.

457942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 974.

The product of its digits is 10080, while the sum is 31.

The square root of 457942 is about 676.7141198468. The cubic root of 457942 is about 77.0791338025.

It can be divided in two parts, 45794 and 2, that added together give a square (45796 = 214²).

The spelling of 457942 in words is "four hundred fifty-seven thousand, nine hundred forty-two".