7242091 has 2 divisors, whose sum is σ = 7242092. Its totient is φ = 7242090.

The previous prime is 7242077. The next prime is 7242101. The reversal of 7242091 is 1902427.

It is a strong prime.

It is an emirp because it is prime and its reverse (1902427) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7242091 - 2⁹ = 7241579 is a prime.

It is not a weakly prime, because it can be changed into another prime (7242061) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3621045 + 3621046.

It is an arithmetic number, because the mean of its divisors is an integer number (3621046).

Almost surely, 2^7242091 is an apocalyptic number.

7242091 is a deficient number, since it is larger than the sum of its proper divisors (1).

7242091 is an equidigital number, since it uses as much as digits as its factorization.

7242091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 7242091 is about 2691.1133383787. The cubic root of 7242091 is about 193.4734276576.

The spelling of 7242091 in words is "seven million, two hundred forty-two thousand, ninety-one".