42564471 has 4 divisors (see below), whose sum is σ = 56752632. Its totient is φ = 28376312.

The previous prime is 42564463. The next prime is 42564479. The reversal of 42564471 is 17446524.

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

It is an interprime number because it is at equal distance from previous prime (42564463) and next prime (42564479).

It is a cyclic number.

It is not a de Polignac number, because 42564471 - 2³ = 42564463 is a prime.

It is a super-3 number, since 3×42564471³ (a number of 24 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42564479) 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, 7094076 + ... + 7094081.

It is an arithmetic number, because the mean of its divisors is an integer number (14188158).

Almost surely, 2^42564471 is an apocalyptic number.

42564471 is a deficient number, since it is larger than the sum of its proper divisors (14188161).

42564471 is a wasteful number, since it uses less digits than its factorization.

42564471 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14188160.

The product of its digits is 26880, while the sum is 33.

The square root of 42564471 is about 6524.1452313694. The cubic root of 42564471 is about 349.1529749215.

The spelling of 42564471 in words is "forty-two million, five hundred sixty-four thousand, four hundred seventy-one".