40641242 has 8 divisors (see below), whose sum is σ = 61022100. Its totient is φ = 20300544.

The previous prime is 40641221. The next prime is 40641257. The reversal of 40641242 is 24214604.

It can be written as a sum of positive squares in 2 ways, for example, as 39450961 + 1190281 = 6281^2 + 1091^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7367 + ... + 11642.

Almost surely, 2^40641242 is an apocalyptic number.

40641242 is a deficient number, since it is larger than the sum of its proper divisors (20380858).

40641242 is a wasteful number, since it uses less digits than its factorization.

40641242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20080.

The product of its (nonzero) digits is 1536, while the sum is 23.

The square root of 40641242 is about 6375.0483919732. The cubic root of 40641242 is about 343.8130237282.

Adding to 40641242 its reverse (24214604), we get a palindrome (64855846).

The spelling of 40641242 in words is "forty million, six hundred forty-one thousand, two hundred forty-two".