7442281 has 16 divisors (see below), whose sum is σ = 9768960. Its totient is φ = 5492880.

The previous prime is 7442249. The next prime is 7442333. The reversal of 7442281 is 1822447.

It is a cyclic number.

It is not a de Polignac number, because 7442281 - 2⁵ = 7442249 is a prime.

It is a super-2 number, since 2×7442281² = 110775092965922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (7442231) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1081 + ... + 4006.

It is an arithmetic number, because the mean of its divisors is an integer number (610560).

Almost surely, 2^7442281 is an apocalyptic number.

It is an amenable number.

7442281 is a deficient number, since it is larger than the sum of its proper divisors (2326679).

7442281 is a wasteful number, since it uses less digits than its factorization.

7442281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5124.

The product of its digits is 3584, while the sum is 28.

The square root of 7442281 is about 2728.0544349408. The cubic root of 7442281 is about 195.2399500697.

It can be divided in two parts, 744 and 2281, that added together give a square (3025 = 55²).

The spelling of 7442281 in words is "seven million, four hundred forty-two thousand, two hundred eighty-one".