40442212 has 6 divisors (see below), whose sum is σ = 70773878. Its totient is φ = 20221104.

The previous prime is 40442209. The next prime is 40442243. The reversal of 40442212 is 21224404.

It can be written as a sum of positive squares in only one way, i.e., 32901696 + 7540516 = 5736^2 + 2746^2 .

It is a super-2 number, since 2×40442212² = 3271145022905888, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 40442212.

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 as a sum of consecutive naturals, namely, 5055273 + ... + 5055280.

Almost surely, 2^40442212 is an apocalyptic number.

It is an amenable number.

40442212 is a deficient number, since it is larger than the sum of its proper divisors (30331666).

40442212 is a wasteful number, since it uses less digits than its factorization.

40442212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10110557 (or 10110555 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 19.

The square root of 40442212 is about 6359.4191558664. The cubic root of 40442212 is about 343.2508598417.

Adding to 40442212 its reverse (21224404), we get a palindrome (61666616).

The spelling of 40442212 in words is "forty million, four hundred forty-two thousand, two hundred twelve".