655442 has 4 divisors (see below), whose sum is σ = 983166. Its totient is φ = 327720.

The previous prime is 655439. The next prime is 655453. The reversal of 655442 is 244556.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 654481 + 961 = 809^2 + 31^2 .

It is a nialpdrome in base 10.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 163859 + ... + 163862.

2⁶⁵⁵⁴⁴² is an apocalyptic number.

655442 is a deficient number, since it is larger than the sum of its proper divisors (327724).

655442 is a wasteful number, since it uses less digits than its factorization.

655442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 327723.

The product of its digits is 4800, while the sum is 26.

The square root of 655442 is about 809.5937252721. The cubic root of 655442 is about 86.8649863378.

Adding to 655442 its reverse (244556), we get a palindrome (899998).

The spelling of 655442 in words is "six hundred fifty-five thousand, four hundred forty-two".