42619989 has 8 divisors (see below), whose sum is σ = 59297472. Its totient is φ = 27177920.

The previous prime is 42619987. The next prime is 42619999. The reversal of 42619989 is 98991624.

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 42619989 - 2¹ = 42619987 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42619987) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 308772 + ... + 308909.

It is an arithmetic number, because the mean of its divisors is an integer number (7412184).

Almost surely, 2^42619989 is an apocalyptic number.

It is an amenable number.

42619989 is a deficient number, since it is larger than the sum of its proper divisors (16677483).

42619989 is a wasteful number, since it uses less digits than its factorization.

42619989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 617707.

The product of its digits is 279936, while the sum is 48.

The square root of 42619989 is about 6528.3986551068. The cubic root of 42619989 is about 349.3047122170.

The spelling of 42619989 in words is "forty-two million, six hundred nineteen thousand, nine hundred eighty-nine".