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112421 = 172389
BaseRepresentation
bin11011011100100101
312201012202
4123130211
512044141
62224245
7645521
oct333445
9181182
10112421
1177511
1255085
133c22a
142cd81
152349b
hex1b725

112421 has 6 divisors (see below), whose sum is σ = 119730. Its totient is φ = 105536.

The previous prime is 112403. The next prime is 112429. The reversal of 112421 is 124211.

Adding to 112421 its reverse (124211), we get a palindrome (236632).

It can be written as a sum of positive squares in 3 ways, for example, as 30625 + 81796 = 175^2 + 286^2 .

It is a de Polignac number, because none of the positive numbers 2k-112421 is a prime.

It is a Duffinian number.

It is a plaindrome in base 8 and base 15.

It is a nialpdrome in base 11.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (112429) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 95 + ... + 483.

It is an arithmetic number, because the mean of its divisors is an integer number (19955).

2112421 is an apocalyptic number.

It is an amenable number.

112421 is a deficient number, since it is larger than the sum of its proper divisors (7309).

112421 is an equidigital number, since it uses as much as digits as its factorization.

112421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 423 (or 406 counting only the distinct ones).

The product of its digits is 16, while the sum is 11.

The square root of 112421 is about 335.2924096964. The cubic root of 112421 is about 48.2631667826.

The spelling of 112421 in words is "one hundred twelve thousand, four hundred twenty-one", and thus it is an iban number.

Divisors: 1 17 289 389 6613 112421