2242739 has 2 divisors, whose sum is σ = 2242740. Its totient is φ = 2242738.

The previous prime is 2242733. The next prime is 2242763. The reversal of 2242739 is 9372422.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2242739 - 2²⁰ = 1194163 is a prime.

It is a Sophie Germain prime.

It is a d-powerful number, because it can be written as 2⁹ + 2¹³ + 4⁷ + 2²¹ + 7⁴ + 3¹⁰ + 9⁵ .

It is not a weakly prime, because it can be changed into another prime (2242733) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1121369 + 1121370.

It is an arithmetic number, because the mean of its divisors is an integer number (1121370).

2^2242739 is an apocalyptic number.

2242739 is a deficient number, since it is larger than the sum of its proper divisors (1).

2242739 is an equidigital number, since it uses as much as digits as its factorization.

2242739 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6048, while the sum is 29.

The square root of 2242739 is about 1497.5777108384. The cubic root of 2242739 is about 130.8959607488.

The spelling of 2242739 in words is "two million, two hundred forty-two thousand, seven hundred thirty-nine".