11542139 has 8 divisors (see below), whose sum is σ = 13885440. Its totient is φ = 9372456.

The previous prime is 11542129. The next prime is 11542151. The reversal of 11542139 is 93124511.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11542139 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11542109) 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 7 ways as a sum of consecutive naturals, for example, 43259 + ... + 43524.

It is an arithmetic number, because the mean of its divisors is an integer number (1735680).

Almost surely, 2^11542139 is an apocalyptic number.

11542139 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

11542139 is a deficient number, since it is larger than the sum of its proper divisors (2343301).

11542139 is an equidigital number, since it uses as much as digits as its factorization.

11542139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86809.

The product of its digits is 1080, while the sum is 26.

The square root of 11542139 is about 3397.3723669919. The cubic root of 11542139 is about 225.9932321047.

The spelling of 11542139 in words is "eleven million, five hundred forty-two thousand, one hundred thirty-nine".