40214257 has 2 divisors, whose sum is σ = 40214258. Its totient is φ = 40214256.

The previous prime is 40214243. The next prime is 40214263. The reversal of 40214257 is 75241204.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34058896 + 6155361 = 5836^2 + 2481^2 .

It is a cyclic number.

It is not a de Polignac number, because 40214257 - 2¹¹ = 40212209 is a prime.

It is not a weakly prime, because it can be changed into another prime (40214957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20107128 + 20107129.

It is an arithmetic number, because the mean of its divisors is an integer number (20107129).

Almost surely, 2^40214257 is an apocalyptic number.

It is an amenable number.

40214257 is a deficient number, since it is larger than the sum of its proper divisors (1).

40214257 is an equidigital number, since it uses as much as digits as its factorization.

40214257 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2240, while the sum is 25.

The square root of 40214257 is about 6341.4712015431. The cubic root of 40214257 is about 342.6047261752.

The spelling of 40214257 in words is "forty million, two hundred fourteen thousand, two hundred fifty-seven".