1157127 has 4 divisors (see below), whose sum is σ = 1542840. Its totient is φ = 771416.

The previous prime is 1157111. The next prime is 1157131. The reversal of 1157127 is 7217511.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1157127 - 2⁴ = 1157111 is a prime.

It is a D-number.

It is a junction number, because it is equal to n+sod(n) for n = 1157097 and 1157106.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1157227) 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, 192852 + ... + 192857.

It is an arithmetic number, because the mean of its divisors is an integer number (385710).

2^1157127 is an apocalyptic number.

1157127 is a deficient number, since it is larger than the sum of its proper divisors (385713).

1157127 is an equidigital number, since it uses as much as digits as its factorization.

1157127 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 385712.

The product of its digits is 490, while the sum is 24.

The square root of 1157127 is about 1075.6983777993. The cubic root of 1157127 is about 104.9849411511.

The spelling of 1157127 in words is "one million, one hundred fifty-seven thousand, one hundred twenty-seven".