40242454 has 16 divisors (see below), whose sum is σ = 69372576. Its totient is φ = 17150400.

The previous prime is 40242427. The next prime is 40242457. The reversal of 40242454 is 45424204.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40242457) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 5407 + ... + 10474.

It is an arithmetic number, because the mean of its divisors is an integer number (4335786).

Almost surely, 2^40242454 is an apocalyptic number.

40242454 is a deficient number, since it is larger than the sum of its proper divisors (29130122).

40242454 is a wasteful number, since it uses less digits than its factorization.

40242454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16071.

The product of its (nonzero) digits is 5120, while the sum is 25.

The square root of 40242454 is about 6343.6940342359. The cubic root of 40242454 is about 342.6847820990.

Adding to 40242454 its reverse (45424204), we get a palindrome (85666658).

The spelling of 40242454 in words is "forty million, two hundred forty-two thousand, four hundred fifty-four".