40531242 has 16 divisors (see below), whose sum is σ = 81126720. Its totient is φ = 13499712.

The previous prime is 40531217. The next prime is 40531259. The reversal of 40531242 is 24213504.

40531242 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10578 + ... + 13890.

It is an arithmetic number, because the mean of its divisors is an integer number (5070420).

Almost surely, 2^40531242 is an apocalyptic number.

40531242 is an abundant number, since it is smaller than the sum of its proper divisors (40595478).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40531242 is a wasteful number, since it uses less digits than its factorization.

40531242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5357.

The product of its (nonzero) digits is 960, while the sum is 21.

The square root of 40531242 is about 6366.4151608264. The cubic root of 40531242 is about 343.5025541742.

Adding to 40531242 its reverse (24213504), we get a palindrome (64744746).

The spelling of 40531242 in words is "forty million, five hundred thirty-one thousand, two hundred forty-two".