7442749 has 2 divisors, whose sum is σ = 7442750. Its totient is φ = 7442748.

The previous prime is 7442681. The next prime is 7442767. The reversal of 7442749 is 9472447.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 7387524 + 55225 = 2718^2 + 235^2 .

It is an emirp because it is prime and its reverse (9472447) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 7442749 - 2⁷ = 7442621 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (7442249) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3721374 + 3721375.

It is an arithmetic number, because the mean of its divisors is an integer number (3721375).

Almost surely, 2^7442749 is an apocalyptic number.

It is an amenable number.

7442749 is a deficient number, since it is larger than the sum of its proper divisors (1).

7442749 is an equidigital number, since it uses as much as digits as its factorization.

7442749 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56448, while the sum is 37.

The square root of 7442749 is about 2728.1402090069. The cubic root of 7442749 is about 195.2440424701.

The spelling of 7442749 in words is "seven million, four hundred forty-two thousand, seven hundred forty-nine".