40545412 has 12 divisors (see below), whose sum is σ = 74039616. Its totient is φ = 19391240.

The previous prime is 40545409. The next prime is 40545437. The reversal of 40545412 is 21454504.

It is a happy number.

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 in 3 ways as a sum of consecutive naturals, for example, 220264 + ... + 220447.

It is an arithmetic number, because the mean of its divisors is an integer number (6169968).

Almost surely, 2^40545412 is an apocalyptic number.

It is an amenable number.

40545412 is a deficient number, since it is larger than the sum of its proper divisors (33494204).

40545412 is a wasteful number, since it uses less digits than its factorization.

40545412 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 440738 (or 440736 counting only the distinct ones).

The product of its (nonzero) digits is 3200, while the sum is 25.

The square root of 40545412 is about 6367.5279347640. The cubic root of 40545412 is about 343.5425797926.

Adding to 40545412 its reverse (21454504), we get a palindrome (61999916).

The spelling of 40545412 in words is "forty million, five hundred forty-five thousand, four hundred twelve".