42206040 has 48 divisors (see below), whose sum is σ = 137170800. Its totient is φ = 11254848.

The previous prime is 42206033. The next prime is 42206041. The reversal of 42206040 is 4060224.

42206040 is a `hidden beast` number, since 42 + 20 + 604 + 0 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42206041) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 58260 + ... + 58979.

It is an arithmetic number, because the mean of its divisors is an integer number (2857725).

Almost surely, 2^42206040 is an apocalyptic number.

42206040 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

42206040 is an abundant number, since it is smaller than the sum of its proper divisors (94964760).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

42206040 is a wasteful number, since it uses less digits than its factorization.

42206040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117256 (or 117249 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 42206040 is about 6496.6175814804. The cubic root of 42206040 is about 348.1701506418.

Adding to 42206040 its reverse (4060224), we get a palindrome (46266264).

The spelling of 42206040 in words is "forty-two million, two hundred six thousand, forty".