40520212 has 12 divisors (see below), whose sum is σ = 71336160. Its totient is φ = 20138456.

The previous prime is 40520167. The next prime is 40520213. The reversal of 40520212 is 21202504.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40520213) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29662 + ... + 30997.

It is an arithmetic number, because the mean of its divisors is an integer number (5944680).

Almost surely, 2^40520212 is an apocalyptic number.

It is an amenable number.

40520212 is a deficient number, since it is larger than the sum of its proper divisors (30815948).

40520212 is a wasteful number, since it uses less digits than its factorization.

40520212 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60830 (or 60828 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 16.

The square root of 40520212 is about 6365.5488372960. The cubic root of 40520212 is about 343.4713915720.

Adding to 40520212 its reverse (21202504), we get a palindrome (61722716).

The spelling of 40520212 in words is "forty million, five hundred twenty thousand, two hundred twelve".