42088447 has 4 divisors (see below), whose sum is σ = 44564256. Its totient is φ = 39612640.

The previous prime is 42088399. The next prime is 42088463. The reversal of 42088447 is 74488024.

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

It is a cyclic number.

It is not a de Polignac number, because 42088447 - 2²³ = 33699839 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 (42080447) 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, 1237879 + ... + 1237912.

It is an arithmetic number, because the mean of its divisors is an integer number (11141064).

Almost surely, 2^42088447 is an apocalyptic number.

42088447 is a deficient number, since it is larger than the sum of its proper divisors (2475809).

42088447 is a wasteful number, since it uses less digits than its factorization.

42088447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2475808.

The product of its (nonzero) digits is 57344, while the sum is 37.

The square root of 42088447 is about 6487.5609438371. The cubic root of 42088447 is about 347.8464966848.

The spelling of 42088447 in words is "forty-two million, eighty-eight thousand, four hundred forty-seven".