40412144 has 20 divisors (see below), whose sum is σ = 78425040. Its totient is φ = 20173440.

The previous prime is 40412137. The next prime is 40412147. The reversal of 40412144 is 44121404.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40412147) 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, 10517 + ... + 13835.

It is an arithmetic number, because the mean of its divisors is an integer number (3921252).

Almost surely, 2^40412144 is an apocalyptic number.

It is an amenable number.

40412144 is a deficient number, since it is larger than the sum of its proper divisors (38012896).

40412144 is a wasteful number, since it uses less digits than its factorization.

40412144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4088 (or 4082 counting only the distinct ones).

The product of its (nonzero) digits is 512, while the sum is 20.

The square root of 40412144 is about 6357.0546639147. The cubic root of 40412144 is about 343.1657719662.

Adding to 40412144 its reverse (44121404), we get a palindrome (84533548).

The spelling of 40412144 in words is "forty million, four hundred twelve thousand, one hundred forty-four".