138702147 has 8 divisors (see below), whose sum is σ = 194669760. Its totient is φ = 87601320.

The previous prime is 138702131. The next prime is 138702197. The reversal of 138702147 is 741207831.

It is a happy number.

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

It is not a de Polignac number, because 138702147 - 2⁴ = 138702131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138702197) 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, 1216629 + ... + 1216742.

It is an arithmetic number, because the mean of its divisors is an integer number (24333720).

Almost surely, 2^138702147 is an apocalyptic number.

138702147 is a deficient number, since it is larger than the sum of its proper divisors (55967613).

138702147 is a wasteful number, since it uses less digits than its factorization.

138702147 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2433393.

The product of its (nonzero) digits is 9408, while the sum is 33.

The square root of 138702147 is about 11777.1875674967. The cubic root of 138702147 is about 517.6398800381.

Adding to 138702147 its reverse (741207831), we get a palindrome (879909978).

The spelling of 138702147 in words is "one hundred thirty-eight million, seven hundred two thousand, one hundred forty-seven".