203402 has 4 divisors (see below), whose sum is σ = 305106. Its totient is φ = 101700.
The previous prime is 203393. The next prime is 203417. The reversal of 203402 is 204302.
It is a Cunningham number, because it is equal to 4512+1.
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., 203401 + 1 = 451^2 + 1^2 .
It is a nialpdrome in base 12.
It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 203402.
It is an unprimeable number.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50849 + ... + 50852.
2203402 is an apocalyptic number.
203402 is a deficient number, since it is larger than the sum of its proper divisors (101704).
203402 is a wasteful number, since it uses less digits than its factorization.
203402 is an evil number, because the sum of its binary digits is even.
The sum of its prime factors is 101703.
The product of its (nonzero) digits is 48, while the sum is 11.
The square root of 203402 is about 451.0011086461. The cubic root of 203402 is about 58.8100758644.
Adding to 203402 its reverse (204302), we get a palindrome (407704).
Subtracting 203402 from its reverse (204302), we obtain a square (900 = 302).
The spelling of 203402 in words is "two hundred three thousand, four hundred two", and thus it is an iban number.
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