201043 has 4 divisors (see below), whose sum is σ = 209808. Its totient is φ = 192280.
The previous prime is 201037. The next prime is 201049. The reversal of 201043 is 340102.
It is a semiprime because it is the product of two primes.
It is an interprime number because it is at equal distance from previous prime (201037) and next prime (201049).
It is not a de Polignac number, because 201043 - 25 = 201011 is a prime.
It is a Duffinian number.
It is not an unprimeable number, because it can be changed into a prime (201049) by changing a digit.
It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4348 + ... + 4393.
It is an arithmetic number, because the mean of its divisors is an integer number (52452).
2201043 is an apocalyptic number.
201043 is a gapful number since it is divisible by the number (23) formed by its first and last digit.
201043 is a deficient number, since it is larger than the sum of its proper divisors (8765).
201043 is an equidigital number, since it uses as much as digits as its factorization.
201043 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 8764.
The product of its (nonzero) digits is 24, while the sum is 10.
The square root of 201043 is about 448.3781885864. The cubic root of 201043 is about 58.5818369084.
Adding to 201043 its reverse (340102), we get a palindrome (541145).
The spelling of 201043 in words is "two hundred one thousand, forty-three", and thus it is an iban number.
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