138258043 has 8 divisors (see below), whose sum is σ = 172373760. Its totient is φ = 107733480.

The previous prime is 138258031. The next prime is 138258053. The reversal of 138258043 is 340852831.

It is a happy number.

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 138258043 - 2²⁵ = 104703611 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138258013) 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, 897703 + ... + 897856.

It is an arithmetic number, because the mean of its divisors is an integer number (21546720).

Almost surely, 2^138258043 is an apocalyptic number.

138258043 is a deficient number, since it is larger than the sum of its proper divisors (34115717).

138258043 is a wasteful number, since it uses less digits than its factorization.

138258043 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1795577.

The product of its (nonzero) digits is 23040, while the sum is 34.

The square root of 138258043 is about 11758.3180344810. The cubic root of 138258043 is about 517.0868202685.

The spelling of 138258043 in words is "one hundred thirty-eight million, two hundred fifty-eight thousand, forty-three".