40142205 has 12 divisors (see below), whose sum is σ = 69579900. Its totient is φ = 21409152.

The previous prime is 40142197. The next prime is 40142213. The reversal of 40142205 is 50224104.

40142205 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (40142197) and next prime (40142213).

It can be written as a sum of positive squares in 2 ways, for example, as 18071001 + 22071204 = 4251^2 + 4698^2 .

It is not a de Polignac number, because 40142205 - 2³ = 40142197 is a prime.

It is a super-2 number, since 2×40142205² = 3222793244524050, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 445980 + ... + 446069.

It is an arithmetic number, because the mean of its divisors is an integer number (5798325).

Almost surely, 2^40142205 is an apocalyptic number.

40142205 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

40142205 is a deficient number, since it is larger than the sum of its proper divisors (29437695).

40142205 is a wasteful number, since it uses less digits than its factorization.

40142205 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 892060 (or 892057 counting only the distinct ones).

The product of its (nonzero) digits is 320, while the sum is 18.

The square root of 40142205 is about 6335.7876384866. The cubic root of 40142205 is about 342.3999885589.

Adding to 40142205 its reverse (50224104), we get a palindrome (90366309).

The spelling of 40142205 in words is "forty million, one hundred forty-two thousand, two hundred five".