11542239 has 6 divisors (see below), whose sum is σ = 16672136. Its totient is φ = 7694820.

The previous prime is 11542231. The next prime is 11542241. The reversal of 11542239 is 93224511.

11542239 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11542239 - 2³ = 11542231 is a prime.

It is a super-2 number, since 2×11542239² = 266446562266242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11542231) 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, 641227 + ... + 641244.

Almost surely, 2^11542239 is an apocalyptic number.

11542239 is a deficient number, since it is larger than the sum of its proper divisors (5129897).

11542239 is a wasteful number, since it uses less digits than its factorization.

11542239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1282477 (or 1282474 counting only the distinct ones).

The product of its digits is 2160, while the sum is 27.

The square root of 11542239 is about 3397.3870842163. The cubic root of 11542239 is about 225.9938847642.

It can be divided in two parts, 11542 and 239, that added together give a triangular number (11781 = T₁₅₃).

The spelling of 11542239 in words is "eleven million, five hundred forty-two thousand, two hundred thirty-nine".