42190660 has 12 divisors (see below), whose sum is σ = 88600428. Its totient is φ = 16876256.

The previous prime is 42190649. The next prime is 42190663. The reversal of 42190660 is 6609124.

It can be written as a sum of positive squares in 2 ways, for example, as 8248384 + 33942276 = 2872^2 + 5826^2 .

It is not an unprimeable number, because it can be changed into a prime (42190663) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1054747 + ... + 1054786.

It is an arithmetic number, because the mean of its divisors is an integer number (7383369).

Almost surely, 2^42190660 is an apocalyptic number.

It is an amenable number.

42190660 is an abundant number, since it is smaller than the sum of its proper divisors (46409768).

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

42190660 is a wasteful number, since it uses less digits than its factorization.

42190660 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2109542 (or 2109540 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 28.

The square root of 42190660 is about 6495.4337807417. The cubic root of 42190660 is about 348.1278541088.

Adding to 42190660 its reverse (6609124), we get a palindrome (48799784).

The spelling of 42190660 in words is "forty-two million, one hundred ninety thousand, six hundred sixty".