146243137 has 4 divisors (see below), whose sum is σ = 146524356. Its totient is φ = 145961920.

The previous prime is 146243107. The next prime is 146243159. The reversal of 146243137 is 731342641.

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

It can be written as a sum of positive squares in 2 ways, for example, as 29257281 + 116985856 = 5409^2 + 10816^2 .

It is a cyclic number.

It is not a de Polignac number, because 146243137 - 2¹⁵ = 146210369 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 146243099 and 146243108.

It is not an unprimeable number, because it can be changed into a prime (146243107) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 139828 + ... + 140869.

It is an arithmetic number, because the mean of its divisors is an integer number (36631089).

Almost surely, 2^146243137 is an apocalyptic number.

It is an amenable number.

146243137 is a deficient number, since it is larger than the sum of its proper divisors (281219).

146243137 is an equidigital number, since it uses as much as digits as its factorization.

146243137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 281218.

The product of its digits is 12096, while the sum is 31.

The square root of 146243137 is about 12093.1028689911. The cubic root of 146243137 is about 526.8558800903.

Adding to 146243137 its reverse (731342641), we get a palindrome (877585778).

The spelling of 146243137 in words is "one hundred forty-six million, two hundred forty-three thousand, one hundred thirty-seven".