7242457 has 2 divisors, whose sum is σ = 7242458. Its totient is φ = 7242456.

The previous prime is 7242451. The next prime is 7242479. The reversal of 7242457 is 7542427.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3779136 + 3463321 = 1944^2 + 1861^2 .

It is a cyclic number.

It is not a de Polignac number, because 7242457 - 2³ = 7242449 is a prime.

It is a d-powerful number, because it can be written as 7⁷ + 2¹⁰ + 4³ + 2¹⁸ + 4⁴ + 5⁸ + 7⁸ .

It is not a weakly prime, because it can be changed into another prime (7242451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3621228 + 3621229.

It is an arithmetic number, because the mean of its divisors is an integer number (3621229).

Almost surely, 2^7242457 is an apocalyptic number.

It is an amenable number.

7242457 is a deficient number, since it is larger than the sum of its proper divisors (1).

7242457 is an equidigital number, since it uses as much as digits as its factorization.

7242457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15680, while the sum is 31.

The square root of 7242457 is about 2691.1813391149. The cubic root of 7242457 is about 193.4766868489.

The spelling of 7242457 in words is "seven million, two hundred forty-two thousand, four hundred fifty-seven".