1001402 has 8 divisors (see below), whose sum is σ = 1590516. Its totient is φ = 471232.

The previous prime is 1001401. The next prime is 1001411. The reversal of 1001402 is 2041001.

It can be written as a sum of positive squares in 2 ways, for example, as 982081 + 19321 = 991^2 + 139^2 .

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

It is a super-3 number, since 3×1001402³ = 3012635698703330424, which contains 333 as substring.

It is an Ulam number.

It is a self number, because there is not a number n which added to its sum of digits gives 1001402.

It is not an unprimeable number, because it can be changed into a prime (1001401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14693 + ... + 14760.

2^1001402 is an apocalyptic number.

1001402 is a deficient number, since it is larger than the sum of its proper divisors (589114).

1001402 is a wasteful number, since it uses less digits than its factorization.

1001402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29472.

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

The square root of 1001402 is about 1000.7007544716. The cubic root of 1001402 is about 100.0467115103.

Adding to 1001402 its reverse (2041001), we get a palindrome (3042403).

The spelling of 1001402 in words is "one million, one thousand, four hundred two".