138141047 has 8 divisors (see below), whose sum is σ = 151137792. Its totient is φ = 125217400.

The previous prime is 138141023. The next prime is 138141061. The reversal of 138141047 is 740141831.

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

It is a de Polignac number, because none of the positive numbers 2^k-138141047 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 (138141547) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14279 + ... + 21912.

It is an arithmetic number, because the mean of its divisors is an integer number (18892224).

Almost surely, 2^138141047 is an apocalyptic number.

138141047 is a deficient number, since it is larger than the sum of its proper divisors (12996745).

138141047 is a wasteful number, since it uses less digits than its factorization.

138141047 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36549.

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 138141047 is about 11753.3419502710. The cubic root of 138141047 is about 516.9409236035.

Adding to 138141047 its reverse (740141831), we get a palindrome (878282878).

The spelling of 138141047 in words is "one hundred thirty-eight million, one hundred forty-one thousand, forty-seven".