42425889 has 8 divisors (see below), whose sum is σ = 61710432. Its totient is φ = 25712640.

The previous prime is 42425833. The next prime is 42425891. The reversal of 42425889 is 98852424.

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

It is not a de Polignac number, because 42425889 - 2⁸ = 42425633 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42425889.

It is not an unprimeable number, because it can be changed into a prime (42425809) 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, 642784 + ... + 642849.

It is an arithmetic number, because the mean of its divisors is an integer number (7713804).

Almost surely, 2^42425889 is an apocalyptic number.

It is an amenable number.

42425889 is a deficient number, since it is larger than the sum of its proper divisors (19284543).

42425889 is a wasteful number, since it uses less digits than its factorization.

42425889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1285647.

The product of its digits is 184320, while the sum is 42.

The square root of 42425889 is about 6513.5158708642. The cubic root of 42425889 is about 348.7736372258.

The spelling of 42425889 in words is "forty-two million, four hundred twenty-five thousand, eight hundred eighty-nine".