561442 has 24 divisors (see below), whose sum is σ = 1040364. Its totient is φ = 225792.

The previous prime is 561439. The next prime is 561461. The reversal of 561442 is 244165.

It can be written as a sum of positive squares in 2 ways, for example, as 561001 + 441 = 749^2 + 21^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1498 + ... + 1834.

2⁵⁶¹⁴⁴² is an apocalyptic number.

561442 is a deficient number, since it is larger than the sum of its proper divisors (478922).

561442 is a wasteful number, since it uses less digits than its factorization.

561442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 370 (or 363 counting only the distinct ones).

The product of its digits is 960, while the sum is 22.

The square root of 561442 is about 749.2943346910. The cubic root of 561442 is about 82.4963940879.

The spelling of 561442 in words is "five hundred sixty-one thousand, four hundred forty-two".