11842157 has 4 divisors (see below), whose sum is σ = 12117600. Its totient is φ = 11566716.

The previous prime is 11842139. The next prime is 11842163. The reversal of 11842157 is 75124811.

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 not a de Polignac number, because 11842157 - 2¹⁸ = 11580013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11842177) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137657 + ... + 137742.

It is an arithmetic number, because the mean of its divisors is an integer number (3029400).

Almost surely, 2^11842157 is an apocalyptic number.

It is an amenable number.

11842157 is a deficient number, since it is larger than the sum of its proper divisors (275443).

11842157 is an equidigital number, since it uses as much as digits as its factorization.

11842157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275442.

The product of its digits is 2240, while the sum is 29.

The square root of 11842157 is about 3441.2435252391. The cubic root of 11842157 is about 227.9346085685.

Adding to 11842157 its reverse (75124811), we get a palindrome (86966968).

The spelling of 11842157 in words is "eleven million, eight hundred forty-two thousand, one hundred fifty-seven".