40213001 has 2 divisors, whose sum is σ = 40213002. Its totient is φ = 40213000.

The previous prime is 40212989. The next prime is 40213021. The reversal of 40213001 is 10031204.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28344976 + 11868025 = 5324^2 + 3445^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-40213001 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (40213021) 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 as a sum of consecutive naturals, namely, 20106500 + 20106501.

It is an arithmetic number, because the mean of its divisors is an integer number (20106501).

Almost surely, 2^40213001 is an apocalyptic number.

It is an amenable number.

40213001 is a deficient number, since it is larger than the sum of its proper divisors (1).

40213001 is an equidigital number, since it uses as much as digits as its factorization.

40213001 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 40213001 is about 6341.3721701222. The cubic root of 40213001 is about 342.6011593140.

Adding to 40213001 its reverse (10031204), we get a palindrome (50244205).

The spelling of 40213001 in words is "forty million, two hundred thirteen thousand, one".