42919566 has 8 divisors (see below), whose sum is σ = 85839144. Its totient is φ = 14306520.

The previous prime is 42919553. The next prime is 42919567. The reversal of 42919566 is 66591924.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

42919566 is an admirable number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42919567) 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, 3576625 + ... + 3576636.

It is an arithmetic number, because the mean of its divisors is an integer number (10729893).

Almost surely, 2^42919566 is an apocalyptic number.

42919566 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42919566 is a wasteful number, since it uses less digits than its factorization.

42919566 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7153266.

The product of its digits is 116640, while the sum is 42.

The square root of 42919566 is about 6551.3026185637. The cubic root of 42919566 is about 350.1212260345.

The spelling of 42919566 in words is "forty-two million, nine hundred nineteen thousand, five hundred sixty-six".