40545212 has 12 divisors (see below), whose sum is σ = 72293256. Its totient is φ = 19890000.

The previous prime is 40545203. The next prime is 40545217. The reversal of 40545212 is 21254504.

It is a happy number.

It is a super-2 number, since 2×40545212² = 3287828432249888, which contains 22 as substring.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40545217) 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, 95414 + ... + 95837.

It is an arithmetic number, because the mean of its divisors is an integer number (6024438).

Almost surely, 2^40545212 is an apocalyptic number.

It is an amenable number.

40545212 is a deficient number, since it is larger than the sum of its proper divisors (31748044).

40545212 is a wasteful number, since it uses less digits than its factorization.

40545212 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 191308 (or 191306 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 23.

The square root of 40545212 is about 6367.5122300629. The cubic root of 40545212 is about 343.5420149228.

Adding to 40545212 its reverse (21254504), we get a palindrome (61799716).

The spelling of 40545212 in words is "forty million, five hundred forty-five thousand, two hundred twelve".