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7442 = 2612
BaseRepresentation
bin1110100010010
3101012122
41310102
5214232
654242
730461
oct16422
911178
107442
115656
124382
133506
1429d8
152312
hex1d12

7442 has 6 divisors (see below), whose sum is σ = 11349. Its totient is φ = 3660.

The previous prime is 7433. The next prime is 7451. The reversal of 7442 is 2447.

7442 is an esthetic number in base 11, because in such base its adjacent digits differ by 1.

It is an interprime number because it is at equal distance from previous prime (7433) and next prime (7451).

It can be written as a sum of positive squares in 2 ways, for example, as 5041 + 2401 = 71^2 + 49^2 .

It is an ABA number since it can be written as A⋅BA, here for A=2, B=61.

It is a Duffinian number.

7442 is an undulating number in base 11.

It is a plaindrome in base 9.

It is a nialpdrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 7442.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 7442.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 92 + ... + 152.

27442 is an apocalyptic number.

7442 is a deficient number, since it is larger than the sum of its proper divisors (3907).

7442 is an equidigital number, since it uses as much as digits as its factorization.

7442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 124 (or 63 counting only the distinct ones).

The product of its digits is 224, while the sum is 17.

The square root of 7442 is about 86.2670273048. The cubic root of 7442 is about 19.5237492798.

Adding to 7442 its reverse (2447), we get a palindrome (9889).

The spelling of 7442 in words is "seven thousand, four hundred forty-two", and thus it is an iban number.

Divisors: 1 2 61 122 3721 7442