246642145 has 4 divisors (see below), whose sum is σ = 295970580. Its totient is φ = 197313712.

The previous prime is 246642127. The next prime is 246642157. The reversal of 246642145 is 541246642.

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 80928016 + 165714129 = 8996^2 + 12873^2 .

It is a cyclic number.

It is not a de Polignac number, because 246642145 - 2²⁵ = 213087713 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 246642145.

It is an unprimeable number.

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, 24664210 + ... + 24664219.

It is an arithmetic number, because the mean of its divisors is an integer number (73992645).

Almost surely, 2^246642145 is an apocalyptic number.

It is an amenable number.

246642145 is a deficient number, since it is larger than the sum of its proper divisors (49328435).

246642145 is an equidigital number, since it uses as much as digits as its factorization.

246642145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49328434.

The product of its digits is 46080, while the sum is 34.

The square root of 246642145 is about 15704.8446346979. The cubic root of 246642145 is about 627.1273809843.

Adding to 246642145 its reverse (541246642), we get a palindrome (787888787).

The spelling of 246642145 in words is "two hundred forty-six million, six hundred forty-two thousand, one hundred forty-five".