1002157 has 8 divisors (see below), whose sum is σ = 1089536. Its totient is φ = 916272.

The previous prime is 1002151. The next prime is 1002173. The reversal of 1002157 is 7512001.

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

It is a cyclic number.

It is not a de Polignac number, because 1002157 - 2³ = 1002149 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1002157.

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 7 ways as a sum of consecutive naturals, for example, 1348 + ... + 1954.

It is an arithmetic number, because the mean of its divisors is an integer number (136192).

2^1002157 is an apocalyptic number.

It is an amenable number.

1002157 is a deficient number, since it is larger than the sum of its proper divisors (87379).

1002157 is a wasteful number, since it uses less digits than its factorization.

1002157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 747.

The product of its (nonzero) digits is 70, while the sum is 16.

The square root of 1002157 is about 1001.0779190453. The cubic root of 1002157 is about 100.0718483658.

Adding to 1002157 its reverse (7512001), we get a palindrome (8514158).

The spelling of 1002157 in words is "one million, two thousand, one hundred fifty-seven".