1128157 has 4 divisors (see below), whose sum is σ = 1133440. Its totient is φ = 1122876.

The previous prime is 1128151. The next prime is 1128161. The reversal of 1128157 is 7518211.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1128157 is a prime.

It is a Duffinian number.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1128151) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2307 + ... + 2752.

It is an arithmetic number, because the mean of its divisors is an integer number (283360).

2^1128157 is an apocalyptic number.

It is an amenable number.

1128157 is a deficient number, since it is larger than the sum of its proper divisors (5283).

1128157 is an equidigital number, since it uses as much as digits as its factorization.

1128157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5282.

The product of its digits is 560, while the sum is 25.

The square root of 1128157 is about 1062.1473532425. The cubic root of 1128157 is about 104.1013865827.

The spelling of 1128157 in words is "one million, one hundred twenty-eight thousand, one hundred fifty-seven".