42406089 has 16 divisors (see below), whose sum is σ = 64364544. Its totient is φ = 24582800.

The previous prime is 42406087. The next prime is 42406093. The reversal of 42406089 is 98060424.

It is not a de Polignac number, because 42406089 - 2¹ = 42406087 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is not an unprimeable number, because it can be changed into a prime (42406087) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 27177 + ... + 28694.

It is an arithmetic number, because the mean of its divisors is an integer number (4022784).

Almost surely, 2^42406089 is an apocalyptic number.

It is an amenable number.

42406089 is a deficient number, since it is larger than the sum of its proper divisors (21958455).

42406089 is a wasteful number, since it uses less digits than its factorization.

42406089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55908.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 42406089 is about 6511.9957770257. The cubic root of 42406089 is about 348.7193716759.

The spelling of 42406089 in words is "forty-two million, four hundred six thousand, eighty-nine".