40442210 has 32 divisors (see below), whose sum is σ = 74278512. Its totient is φ = 15851520.

The previous prime is 40442209. The next prime is 40442243. The reversal of 40442210 is 1224404.

40442210 is nontrivially palindromic in base 16.

It can be written as a sum of positive squares in 8 ways, for example, as 30813601 + 9628609 = 5551^2 + 3103^2 .

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 167690 + ... + 167930.

Almost surely, 2^40442210 is an apocalyptic number.

40442210 is a deficient number, since it is larger than the sum of its proper divisors (33836302).

40442210 is a wasteful number, since it uses less digits than its factorization.

40442210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 40442210 is about 6359.4189986193. The cubic root of 40442210 is about 343.2508541834.

Adding to 40442210 its reverse (1224404), we get a palindrome (41666614).

The spelling of 40442210 in words is "forty million, four hundred forty-two thousand, two hundred ten".