42661210 has 16 divisors (see below), whose sum is σ = 76875336. Its totient is φ = 17045568.

The previous prime is 42661207. The next prime is 42661243. The reversal of 42661210 is 1216624.

It can be written as a sum of positive squares in 4 ways, for example, as 34140649 + 8520561 = 5843^2 + 2919^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10372 + ... + 13888.

Almost surely, 2^42661210 is an apocalyptic number.

42661210 is a deficient number, since it is larger than the sum of its proper divisors (34214126).

42661210 is a wasteful number, since it uses less digits than its factorization.

42661210 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4737.

The product of its (nonzero) digits is 576, while the sum is 22.

The square root of 42661210 is about 6531.5549450341. The cubic root of 42661210 is about 349.4172888926.

Adding to 42661210 its reverse (1216624), we get a palindrome (43877834).

It can be divided in two parts, 4266 and 1210, that added together give a square (5476 = 74²).

The spelling of 42661210 in words is "forty-two million, six hundred sixty-one thousand, two hundred ten".