11542391 has 6 divisors (see below), whose sum is σ = 13426920. Its totient is φ = 9893436.

The previous prime is 11542379. The next prime is 11542397. The reversal of 11542391 is 19324511.

It is not a de Polignac number, because 11542391 - 2⁶ = 11542327 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11542391.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11542397) 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, 117731 + ... + 117828.

It is an arithmetic number, because the mean of its divisors is an integer number (2237820).

Almost surely, 2^11542391 is an apocalyptic number.

11542391 is a deficient number, since it is larger than the sum of its proper divisors (1884529).

11542391 is an equidigital number, since it uses as much as digits as its factorization.

11542391 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 235573 (or 235566 counting only the distinct ones).

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

The square root of 11542391 is about 3397.4094542754. The cubic root of 11542391 is about 225.9948767993.

The spelling of 11542391 in words is "eleven million, five hundred forty-two thousand, three hundred ninety-one".