40242530 has 16 divisors (see below), whose sum is σ = 72515520. Its totient is φ = 16079472.

The previous prime is 40242511. The next prime is 40242533. The reversal of 40242530 is 3524204.

It is a super-2 number, since 2×40242530² = 3238922441601800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (40242533) 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, 11531 + ... + 14609.

It is an arithmetic number, because the mean of its divisors is an integer number (4532220).

Almost surely, 2^40242530 is an apocalyptic number.

40242530 is a deficient number, since it is larger than the sum of its proper divisors (32272990).

40242530 is a wasteful number, since it uses less digits than its factorization.

40242530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4393.

The product of its (nonzero) digits is 960, while the sum is 20.

The square root of 40242530 is about 6343.7000244337. The cubic root of 40242530 is about 342.6849978249.

Adding to 40242530 its reverse (3524204), we get a palindrome (43766734).

The spelling of 40242530 in words is "forty million, two hundred forty-two thousand, five hundred thirty".