42205670 has 32 divisors (see below), whose sum is σ = 82682208. Its totient is φ = 15418368.

The previous prime is 42205637. The next prime is 42205673. The reversal of 42205670 is 7650224.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42205673) 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, 10937 + ... + 14283.

It is an arithmetic number, because the mean of its divisors is an integer number (2583819).

Almost surely, 2^42205670 is an apocalyptic number.

42205670 is a deficient number, since it is larger than the sum of its proper divisors (40476538).

42205670 is a wasteful number, since it uses less digits than its factorization.

42205670 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3464.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 42205670 is about 6496.5891050612. The cubic root of 42205670 is about 348.1691332256.

Adding to 42205670 its reverse (7650224), we get a palindrome (49855894).

It can be divided in two parts, 42205 and 670, that added together give a cube (42875 = 35³).

The spelling of 42205670 in words is "forty-two million, two hundred five thousand, six hundred seventy".