671442 has 16 divisors (see below), whose sum is σ = 1372032. Its totient is φ = 218960.

The previous prime is 671431. The next prime is 671443. The reversal of 671442 is 244176.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 671442.

It is not an unprimeable number, because it can be changed into a prime (671443) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 909 + ... + 1472.

It is an arithmetic number, because the mean of its divisors is an integer number (85752).

2⁶⁷¹⁴⁴² is an apocalyptic number.

671442 is an abundant number, since it is smaller than the sum of its proper divisors (700590).

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

671442 is a wasteful number, since it uses less digits than its factorization.

671442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2433.

The product of its digits is 1344, while the sum is 24.

The square root of 671442 is about 819.4156454450. The cubic root of 671442 is about 87.5661323177.

The spelling of 671442 in words is "six hundred seventy-one thousand, four hundred forty-two".