40267021 has 2 divisors, whose sum is σ = 40267022. Its totient is φ = 40267020.

The previous prime is 40267013. The next prime is 40267039. The reversal of 40267021 is 12076204.

40267021 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40182921 + 84100 = 6339^2 + 290^2 .

It is a cyclic number.

It is not a de Polignac number, because 40267021 - 2³ = 40267013 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 40266983 and 40267001.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (40267081) 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 as a sum of consecutive naturals, namely, 20133510 + 20133511.

It is an arithmetic number, because the mean of its divisors is an integer number (20133511).

Almost surely, 2^40267021 is an apocalyptic number.

It is an amenable number.

40267021 is a deficient number, since it is larger than the sum of its proper divisors (1).

40267021 is an equidigital number, since it uses as much as digits as its factorization.

40267021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 672, while the sum is 22.

The square root of 40267021 is about 6345.6300711592. The cubic root of 40267021 is about 342.7545013767.

The spelling of 40267021 in words is "forty million, two hundred sixty-seven thousand, twenty-one".