138750146 has 8 divisors (see below), whose sum is σ = 208184124. Its totient is φ = 69355440.

The previous prime is 138750137. The next prime is 138750169. The reversal of 138750146 is 641057831.

It can be written as a sum of positive squares in 2 ways, for example, as 138321121 + 429025 = 11761^2 + 655^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1736 + ... + 16748.

Almost surely, 2^138750146 is an apocalyptic number.

138750146 is a deficient number, since it is larger than the sum of its proper divisors (69433978).

138750146 is a wasteful number, since it uses less digits than its factorization.

138750146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19636.

The product of its (nonzero) digits is 20160, while the sum is 35.

The square root of 138750146 is about 11779.2251867430. The cubic root of 138750146 is about 517.6995843076.

The spelling of 138750146 in words is "one hundred thirty-eight million, seven hundred fifty thousand, one hundred forty-six".