402004 has 6 divisors (see below), whose sum is σ = 703514. Its totient is φ = 201000.
The previous prime is 401993. The next prime is 402023. The reversal of 402004 is 400204.
It can be written as a sum of positive squares in only one way, i.e., 280900 + 121104 = 530^2 + 348^2 .
It is a congruent number.
It is an unprimeable number.
It is a pernicious number, because its binary representation contains a prime number (7) of ones.
It is a polite number, since it can be written as a sum of consecutive naturals, namely, 50247 + ... + 50254.
2402004 is an apocalyptic number.
It is an amenable number.
402004 is a deficient number, since it is larger than the sum of its proper divisors (301510).
402004 is a wasteful number, since it uses less digits than its factorization.
402004 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 100505 (or 100503 counting only the distinct ones).
The product of its (nonzero) digits is 32, while the sum is 10.
The square root of 402004 is about 634.0378537595. The cubic root of 402004 is about 73.8034717070.
Adding to 402004 its reverse (400204), we get a palindrome (802208).
It can be divided in two parts, 40200 and 4, that added together give a palindrome (40204).
The spelling of 402004 in words is "four hundred two thousand, four", and thus it is an iban number.
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