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421111 = 4110271
BaseRepresentation
bin1100110110011110111
3210101122201
41212303313
5101433421
613005331
73402505
oct1466367
9711581
10421111
11268429
12183847
131198a2
14ad675
1584b91
hex66cf7

421111 has 4 divisors (see below), whose sum is σ = 431424. Its totient is φ = 410800.

The previous prime is 421103. The next prime is 421121. The reversal of 421111 is 111124.

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

It is a cyclic number.

It is not a de Polignac number, because 421111 - 23 = 421103 is a prime.

It is a Duffinian number.

421111 is a modest number, since divided by 1111 gives 42 as remainder.

It is a nialpdrome in base 10.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (421121) 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 3 ways as a sum of consecutive naturals, for example, 5095 + ... + 5176.

It is an arithmetic number, because the mean of its divisors is an integer number (107856).

2421111 is an apocalyptic number.

421111 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

421111 is a deficient number, since it is larger than the sum of its proper divisors (10313).

421111 is a wasteful number, since it uses less digits than its factorization.

421111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10312.

The product of its digits is 8, while the sum is 10.

The square root of 421111 is about 648.9306588535. The cubic root of 421111 is about 74.9546985685.

Adding to 421111 its reverse (111124), we get a palindrome (532235).

It can be divided in two parts, 4 and 21111, that added together give a triangular number (21115 = T205).

The spelling of 421111 in words is "four hundred twenty-one thousand, one hundred eleven", and thus it is an iban number.

Divisors: 1 41 10271 421111