42547061 has 4 divisors (see below), whose sum is σ = 44786400. Its totient is φ = 40307724.

The previous prime is 42547051. The next prime is 42547067. The reversal of 42547061 is 16074524.

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 42547061 - 2¹⁰ = 42546037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42547067) 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, 1119641 + ... + 1119678.

It is an arithmetic number, because the mean of its divisors is an integer number (11196600).

Almost surely, 2^42547061 is an apocalyptic number.

It is an amenable number.

42547061 is a deficient number, since it is larger than the sum of its proper divisors (2239339).

42547061 is a wasteful number, since it uses less digits than its factorization.

42547061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2239338.

The product of its (nonzero) digits is 6720, while the sum is 29.

The square root of 42547061 is about 6522.8108204976. The cubic root of 42547061 is about 349.1053641471.

The spelling of 42547061 in words is "forty-two million, five hundred forty-seven thousand, sixty-one".