40242401 has 4 divisors (see below), whose sum is σ = 41630100. Its totient is φ = 38854704.

The previous prime is 40242337. The next prime is 40242403. The reversal of 40242401 is 10424204.

40242401 = T₉₁₈ + T₉₁₉ + ... + T₁₀₀₄.

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 31091776 + 9150625 = 5576^2 + 3025^2 .

It is a cyclic number.

It is not a de Polignac number, because 40242401 - 2⁶ = 40242337 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40242401.

It is not an unprimeable number, because it can be changed into a prime (40242403) 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 3 ways as a sum of consecutive naturals, for example, 693806 + ... + 693863.

It is an arithmetic number, because the mean of its divisors is an integer number (10407525).

Almost surely, 2^40242401 is an apocalyptic number.

It is an amenable number.

40242401 is a deficient number, since it is larger than the sum of its proper divisors (1387699).

40242401 is a wasteful number, since it uses less digits than its factorization.

40242401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1387698.

The product of its (nonzero) digits is 256, while the sum is 17.

The square root of 40242401 is about 6343.6898568578. The cubic root of 40242401 is about 342.6846316583.

Adding to 40242401 its reverse (10424204), we get a palindrome (50666605).

The spelling of 40242401 in words is "forty million, two hundred forty-two thousand, four hundred one".