1402 has 4 divisors (see below), whose sum is σ = 2106. Its totient is φ = 700.

The previous prime is 1399. The next prime is 1409. The reversal of 1402 is 2041.

1402 is nontrivially palindromic in base 3.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2041 = 13 ⋅157.

It can be written as a sum of positive squares in only one way, i.e., 961 + 441 = 31^2 + 21^2 .

It is a plaindrome in base 16.

It is a nialpdrome in base 14.

It is not an unprimeable number, because it can be changed into a prime (1409) by changing a digit.

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, 349 + ... + 352.

1402 is a deficient number, since it is larger than the sum of its proper divisors (704).

1402 is an equidigital number, since it uses as much as digits as its factorization.

1402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 703.

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

The square root of 1402 is about 37.4432904537. The cubic root of 1402 is about 11.1922139763.

Adding to 1402 its reverse (2041), we get a palindrome (3443).

The spelling of 1402 in words is "one thousand, four hundred two", and thus it is an iban number.

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