1157427 has 6 divisors (see below), whose sum is σ = 1671852. Its totient is φ = 771612.

The previous prime is 1157413. The next prime is 1157437. The reversal of 1157427 is 7247511.

It is not a de Polignac number, because 1157427 - 2⁶ = 1157363 is a prime.

1157427 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1157427.

It is not an unprimeable number, because it can be changed into a prime (1157437) 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, 64293 + ... + 64310.

It is an arithmetic number, because the mean of its divisors is an integer number (278642).

2^1157427 is an apocalyptic number.

1157427 is a deficient number, since it is larger than the sum of its proper divisors (514425).

1157427 is a wasteful number, since it uses less digits than its factorization.

1157427 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 128609 (or 128606 counting only the distinct ones).

The product of its digits is 1960, while the sum is 27.

The square root of 1157427 is about 1075.8378130555. The cubic root of 1157427 is about 104.9940132641.

The spelling of 1157427 in words is "one million, one hundred fifty-seven thousand, four hundred twenty-seven".