146236138 has 8 divisors (see below), whose sum is σ = 219435300. Its totient is φ = 73091040.

The previous prime is 146236127. The next prime is 146236147. The reversal of 146236138 is 831632641.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 97752769 + 48483369 = 9887^2 + 6963^2 .

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, 5893 + ... + 18088.

Almost surely, 2^146236138 is an apocalyptic number.

146236138 is a deficient number, since it is larger than the sum of its proper divisors (73199162).

146236138 is a wasteful number, since it uses less digits than its factorization.

146236138 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27032.

The product of its digits is 20736, while the sum is 34.

The square root of 146236138 is about 12092.8134857030. The cubic root of 146236138 is about 526.8474750847.

Adding to 146236138 its reverse (831632641), we get a palindrome (977868779).

The spelling of 146236138 in words is "one hundred forty-six million, two hundred thirty-six thousand, one hundred thirty-eight".