42683561 has 4 divisors (see below), whose sum is σ = 44539392. Its totient is φ = 40827732.

The previous prime is 42683483. The next prime is 42683573. The reversal of 42683561 is 16538624.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42683561 - 2¹⁰ = 42682537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42683581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 927881 + ... + 927926.

It is an arithmetic number, because the mean of its divisors is an integer number (11134848).

Almost surely, 2^42683561 is an apocalyptic number.

It is an amenable number.

42683561 is a deficient number, since it is larger than the sum of its proper divisors (1855831).

42683561 is a wasteful number, since it uses less digits than its factorization.

42683561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1855830.

The product of its digits is 34560, while the sum is 35.

The square root of 42683561 is about 6533.2657224393. The cubic root of 42683561 is about 349.4783003072.

The spelling of 42683561 in words is "forty-two million, six hundred eighty-three thousand, five hundred sixty-one".