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10042 = 25021
BaseRepresentation
bin10011100111010
3111202221
42130322
5310132
6114254
741164
oct23472
914687
1010042
1175aa
12598a
134756
143934
152e97
hex273a

10042 has 4 divisors (see below), whose sum is σ = 15066. Its totient is φ = 5020.

The previous prime is 10039. The next prime is 10061. The reversal of 10042 is 24001.

Adding to 10042 its reverse (24001), we get a palindrome (34043).

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 6561 + 3481 = 81^2 + 59^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2509 + ... + 2512.

210042 is an apocalyptic number.

10042 is a deficient number, since it is larger than the sum of its proper divisors (5024).

10042 is an equidigital number, since it uses as much as digits as its factorization.

10042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5023.

The product of its (nonzero) digits is 8, while the sum is 7.

The square root of 10042 is about 100.2097799618. The cubic root of 10042 is about 21.5744668573.

The spelling of 10042 in words is "ten thousand, forty-two", and thus it is an iban number.

Divisors: 1 2 5021 10042