42418785 has 16 divisors (see below), whose sum is σ = 70821504. Its totient is φ = 21639552.

The previous prime is 42418781. The next prime is 42418801. The reversal of 42418785 is 58781424.

It is a happy number.

It is not a de Polignac number, because 42418785 - 2² = 42418781 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42418781) 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, 61132 + ... + 61821.

It is an arithmetic number, because the mean of its divisors is an integer number (4426344).

Almost surely, 2^42418785 is an apocalyptic number.

It is an amenable number.

42418785 is a deficient number, since it is larger than the sum of its proper divisors (28402719).

42418785 is a wasteful number, since it uses less digits than its factorization.

42418785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122984.

The product of its digits is 71680, while the sum is 39.

The square root of 42418785 is about 6512.9705204308. The cubic root of 42418785 is about 348.7541693467.

The spelling of 42418785 in words is "forty-two million, four hundred eighteen thousand, seven hundred eighty-five".