40242541 has 4 divisors (see below), whose sum is σ = 40641084. Its totient is φ = 39844000.

The previous prime is 40242533. The next prime is 40242547. The reversal of 40242541 is 14524204.

It is a happy number.

40242541 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19766916 + 20475625 = 4446^2 + 4525^2 .

It is a cyclic number.

It is not a de Polignac number, because 40242541 - 2³ = 40242533 is a prime.

It is a super-2 number, since 2×40242541² = 3238924212273362, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40242547) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 199120 + ... + 199321.

It is an arithmetic number, because the mean of its divisors is an integer number (10160271).

Almost surely, 2^40242541 is an apocalyptic number.

It is an amenable number.

40242541 is a deficient number, since it is larger than the sum of its proper divisors (398543).

40242541 is a wasteful number, since it uses less digits than its factorization.

40242541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 398542.

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 40242541 is about 6343.7008914355. The cubic root of 40242541 is about 342.6850290484.

Adding to 40242541 its reverse (14524204), we get a palindrome (54766745).

The spelling of 40242541 in words is "forty million, two hundred forty-two thousand, five hundred forty-one".