1000402 has 16 divisors (see below), whose sum is σ = 1635480. Its totient is φ = 456192.

The previous prime is 1000397. The next prime is 1000403. The reversal of 1000402 is 2040001.

It can be written as a sum of positive squares in 4 ways, for example, as 741321 + 259081 = 861^2 + 509^2 .

It is not an unprimeable number, because it can be changed into a prime (1000403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2658 + ... + 3010.

2^1000402 is an apocalyptic number.

1000402 is a deficient number, since it is larger than the sum of its proper divisors (635078).

1000402 is a wasteful number, since it uses less digits than its factorization.

1000402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 477.

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

The square root of 1000402 is about 1000.2009798036. The cubic root of 1000402 is about 100.0133982048.

Adding to 1000402 its reverse (2040001), we get a palindrome (3040403).

The spelling of 1000402 in words is "one million, four hundred two", and thus it is an aban number.