1002158 has 12 divisors (see below), whose sum is σ = 1544688. Its totient is φ = 487620.

The previous prime is 1002151. The next prime is 1002173. The reversal of 1002158 is 8512001.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1002151) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3563 + ... + 3833.

It is an arithmetic number, because the mean of its divisors is an integer number (128724).

2^1002158 is an apocalyptic number.

1002158 is a deficient number, since it is larger than the sum of its proper divisors (542530).

1002158 is an equidigital number, since it uses as much as digits as its factorization.

1002158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 359 (or 316 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 17.

The square root of 1002158 is about 1001.0784185068. The cubic root of 1002158 is about 100.0718816512.

Adding to 1002158 its reverse (8512001), we get a palindrome (9514159).

The spelling of 1002158 in words is "one million, two thousand, one hundred fifty-eight".