40241213 has 4 divisors (see below), whose sum is σ = 41222748. Its totient is φ = 39259680.

The previous prime is 40241209. The next prime is 40241219. The reversal of 40241213 is 31214204.

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 3602404 + 36638809 = 1898^2 + 6053^2 .

It is a cyclic number.

It is not a de Polignac number, because 40241213 - 2² = 40241209 is a prime.

It is a super-2 number, since 2×40241213² = 3238710447422738, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 40241191 and 40241200.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40241219) 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, 490706 + ... + 490787.

It is an arithmetic number, because the mean of its divisors is an integer number (10305687).

Almost surely, 2^40241213 is an apocalyptic number.

It is an amenable number.

40241213 is a deficient number, since it is larger than the sum of its proper divisors (981535).

40241213 is an equidigital number, since it uses as much as digits as its factorization.

40241213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981534.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 40241213 is about 6343.5962198110. The cubic root of 40241213 is about 342.6812594826.

Adding to 40241213 its reverse (31214204), we get a palindrome (71455417).

The spelling of 40241213 in words is "forty million, two hundred forty-one thousand, two hundred thirteen".