40142212 has 24 divisors (see below), whose sum is σ = 80670240. Its totient is φ = 17285760.

The previous prime is 40142197. The next prime is 40142213. The reversal of 40142212 is 21224104.

It is a super-2 number, since 2×40142212² = 3222794368505888, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40142213) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23173 + ... + 24844.

It is an arithmetic number, because the mean of its divisors is an integer number (3361260).

Almost surely, 2^40142212 is an apocalyptic number.

It is an amenable number.

40142212 is an abundant number, since it is smaller than the sum of its proper divisors (40528028).

40142212 is a wasteful number, since it uses less digits than its factorization.

40142212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48051 (or 48049 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 16.

The square root of 40142212 is about 6335.7881909041. The cubic root of 40142212 is about 342.4000084614.

Adding to 40142212 its reverse (21224104), we get a palindrome (61366316).

It can be divided in two parts, 4014 and 2212, that added together give a palindrome (6226).

The spelling of 40142212 in words is "forty million, one hundred forty-two thousand, two hundred twelve".