10402 has 8 divisors (see below), whose sum is σ = 17856. Its totient is φ = 4452.

The previous prime is 10399. The next prime is 10427. The reversal of 10402 is 20401.

Adding to 10402 its reverse (20401), we get a palindrome (30803).

Subtracting 10402 from its reverse (20401), we obtain a palindrome (9999).

It can be divided in two parts, 1040 and 2, that multiplied together give a triangular number (2080 = T_{64}).

10402 = 4^{2} + 5^{2} + ... + 31^{2}.

10402 is nontrivially palindromic in base 8.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Harshad number since it is a multiple of its sum of digits (7).

10402 is an undulating number in base 8.

It is a nialpdrome in base 7.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 358 + ... + 385.

It is an arithmetic number, because the mean of its divisors is an integer number (2232).

2^{10402} is an apocalyptic number.

10402 is a deficient number, since it is larger than the sum of its proper divisors (7454).

10402 is an equidigital number, since it uses as much as digits as its factorization.

10402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 752.

The product of its (nonzero) digits is 8, while the sum is 7.

The square root of 10402 is about 101.9901956072. The cubic root of 10402 is about 21.8292567932.

The spelling of 10402 in words is "ten thousand, four hundred two", and thus it is an iban number.

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