1158427 has 2 divisors, whose sum is σ = 1158428. Its totient is φ = 1158426.

The previous prime is 1158419. The next prime is 1158457. The reversal of 1158427 is 7248511.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1158427 - 2³ = 1158419 is a prime.

It is a super-2 number, since 2×1158427² = 2683906228658, which contains 22 as substring.

It is a Chen prime.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 1158395 and 1158404.

It is not a weakly prime, because it can be changed into another prime (1158407) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 579213 + 579214.

It is an arithmetic number, because the mean of its divisors is an integer number (579214).

2^1158427 is an apocalyptic number.

1158427 is a deficient number, since it is larger than the sum of its proper divisors (1).

1158427 is an equidigital number, since it uses as much as digits as its factorization.

1158427 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2240, while the sum is 28.

The square root of 1158427 is about 1076.3024667815. The cubic root of 1158427 is about 105.0242423239.

It can be divided in two parts, 11584 and 27, that added together give a palindrome (11611).

The spelling of 1158427 in words is "one million, one hundred fifty-eight thousand, four hundred twenty-seven".