40213241 has 4 divisors (see below), whose sum is σ = 40460112. Its totient is φ = 39966372.

The previous prime is 40213219. The next prime is 40213249. The reversal of 40213241 is 14231204.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40213241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40213249) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 123191 + ... + 123516.

It is an arithmetic number, because the mean of its divisors is an integer number (10115028).

Almost surely, 2^40213241 is an apocalyptic number.

It is an amenable number.

40213241 is a deficient number, since it is larger than the sum of its proper divisors (246871).

40213241 is a wasteful number, since it uses less digits than its factorization.

40213241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 246870.

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

The square root of 40213241 is about 6341.3910934431. The cubic root of 40213241 is about 342.6018408856.

Adding to 40213241 its reverse (14231204), we get a palindrome (54444445).

The spelling of 40213241 in words is "forty million, two hundred thirteen thousand, two hundred forty-one".