11540139 has 8 divisors (see below), whose sum is σ = 16570512. Its totient is φ = 7101600.

The previous prime is 11540131. The next prime is 11540141. The reversal of 11540139 is 93104511.

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

It is not a de Polignac number, because 11540139 - 2³ = 11540131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11540131) 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 in 7 ways as a sum of consecutive naturals, for example, 147912 + ... + 147989.

It is an arithmetic number, because the mean of its divisors is an integer number (2071314).

Almost surely, 2^11540139 is an apocalyptic number.

11540139 is a deficient number, since it is larger than the sum of its proper divisors (5030373).

11540139 is a wasteful number, since it uses less digits than its factorization.

11540139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295917.

The product of its (nonzero) digits is 540, while the sum is 24.

The square root of 11540139 is about 3397.0780091131. The cubic root of 11540139 is about 225.9801781242.

It can be divided in two parts, 115401 and 39, that added together give a triangular number (115440 = T₄₈₀).

The spelling of 11540139 in words is "eleven million, five hundred forty thousand, one hundred thirty-nine".