42205770 has 24 divisors (see below), whose sum is σ = 109735236. Its totient is φ = 11254848.

The previous prime is 42205763. The next prime is 42205777. The reversal of 42205770 is 7750224.

It is an interprime number because it is at equal distance from previous prime (42205763) and next prime (42205777).

It can be written as a sum of positive squares in 2 ways, for example, as 37933281 + 4272489 = 6159^2 + 2067^2 .

It is not an unprimeable number, because it can be changed into a prime (42205777) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 234387 + ... + 234566.

Almost surely, 2^42205770 is an apocalyptic number.

42205770 is an abundant number, since it is smaller than the sum of its proper divisors (67529466).

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

42205770 is a wasteful number, since it uses less digits than its factorization.

42205770 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 468966 (or 468963 counting only the distinct ones).

The product of its (nonzero) digits is 3920, while the sum is 27.

The square root of 42205770 is about 6496.5968014030. The cubic root of 42205770 is about 348.1694082035.

Adding to 42205770 its reverse (7750224), we get a palindrome (49955994).

The spelling of 42205770 in words is "forty-two million, two hundred five thousand, seven hundred seventy".