42057489 has 8 divisors (see below), whose sum is σ = 56866752. Its totient is φ = 27643280.

The previous prime is 42057481. The next prime is 42057523. The reversal of 42057489 is 98475024.

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

It is a cyclic number.

It is not a de Polignac number, because 42057489 - 2³ = 42057481 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42057481) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 98514 + ... + 98939.

It is an arithmetic number, because the mean of its divisors is an integer number (7108344).

Almost surely, 2^42057489 is an apocalyptic number.

It is an amenable number.

42057489 is a deficient number, since it is larger than the sum of its proper divisors (14809263).

42057489 is a wasteful number, since it uses less digits than its factorization.

42057489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 197527.

The product of its (nonzero) digits is 80640, while the sum is 39.

The square root of 42057489 is about 6485.1745543200. The cubic root of 42057489 is about 347.7611900353.

The spelling of 42057489 in words is "forty-two million, fifty-seven thousand, four hundred eighty-nine".