561674242 has 4 divisors (see below), whose sum is σ = 842511366. Its totient is φ = 280837120.

The previous prime is 561674209. The next prime is 561674249. The reversal of 561674242 is 242476165.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 242476165 = 5 ⋅48495233.

It can be written as a sum of positive squares in only one way, i.e., 561168721 + 505521 = 23689^2 + 711^2 .

It is not an unprimeable number, because it can be changed into a prime (561674249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 140418559 + ... + 140418562.

Almost surely, 2^561674242 is an apocalyptic number.

561674242 is a deficient number, since it is larger than the sum of its proper divisors (280837124).

561674242 is a wasteful number, since it uses less digits than its factorization.

561674242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 280837123.

The product of its digits is 80640, while the sum is 37.

The square root of 561674242 is about 23699.6675504109. The cubic root of 561674242 is about 825.0776747191.

The spelling of 561674242 in words is "five hundred sixty-one million, six hundred seventy-four thousand, two hundred forty-two".