138062843 has 4 divisors (see below), whose sum is σ = 139150080. Its totient is φ = 136975608.

The previous prime is 138062833. The next prime is 138062857. The reversal of 138062843 is 348260831.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138062843 is a prime.

It is a super-2 number, since 2×138062843² = 38122697234485298, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138062803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 543428 + ... + 543681.

It is an arithmetic number, because the mean of its divisors is an integer number (34787520).

Almost surely, 2^138062843 is an apocalyptic number.

138062843 is a deficient number, since it is larger than the sum of its proper divisors (1087237).

138062843 is a wasteful number, since it uses less digits than its factorization.

138062843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1087236.

The product of its (nonzero) digits is 27648, while the sum is 35.

The square root of 138062843 is about 11750.0145957356. The cubic root of 138062843 is about 516.8433555018.

The spelling of 138062843 in words is "one hundred thirty-eight million, sixty-two thousand, eight hundred forty-three".