138425543 has 8 divisors (see below), whose sum is σ = 146694960. Its totient is φ = 130170240.

The previous prime is 138425537. The next prime is 138425549. The reversal of 138425543 is 345524831.

It is an interprime number because it is at equal distance from previous prime (138425537) and next prime (138425549).

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

It is a cyclic number.

It is not a de Polignac number, because 138425543 - 2⁶ = 138425479 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 (138425549) 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, 22013 + ... + 27593.

It is an arithmetic number, because the mean of its divisors is an integer number (18336870).

Almost surely, 2^138425543 is an apocalyptic number.

138425543 is a deficient number, since it is larger than the sum of its proper divisors (8269417).

138425543 is a wasteful number, since it uses less digits than its factorization.

138425543 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7057.

The product of its digits is 57600, while the sum is 35.

The square root of 138425543 is about 11765.4384958658. The cubic root of 138425543 is about 517.2955533668.

The spelling of 138425543 in words is "one hundred thirty-eight million, four hundred twenty-five thousand, five hundred forty-three".