42240697 has 2 divisors, whose sum is σ = 42240698. Its totient is φ = 42240696.

The previous prime is 42240691. The next prime is 42240703. The reversal of 42240697 is 79604224.

It is a balanced prime because it is at equal distance from previous prime (42240691) and next prime (42240703).

It can be written as a sum of positive squares in only one way, i.e., 31091776 + 11148921 = 5576^2 + 3339^2 .

It is a cyclic number.

It is not a de Polignac number, because 42240697 - 2¹⁵ = 42207929 is a prime.

It is not a weakly prime, because it can be changed into another prime (42240691) 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, 21120348 + 21120349.

It is an arithmetic number, because the mean of its divisors is an integer number (21120349).

Almost surely, 2^42240697 is an apocalyptic number.

It is an amenable number.

42240697 is a deficient number, since it is larger than the sum of its proper divisors (1).

42240697 is an equidigital number, since it uses as much as digits as its factorization.

42240697 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 24192, while the sum is 34.

The square root of 42240697 is about 6499.2843452183. The cubic root of 42240697 is about 348.2654231956.

The spelling of 42240697 in words is "forty-two million, two hundred forty thousand, six hundred ninety-seven".