165232426 has 4 divisors (see below), whose sum is σ = 247848642. Its totient is φ = 82616212.

The previous prime is 165232423. The next prime is 165232427. The reversal of 165232426 is 624232561.

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

It can be written as a sum of positive squares in only one way, i.e., 118788201 + 46444225 = 10899^2 + 6815^2 .

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (165232421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41308105 + ... + 41308108.

Almost surely, 2^165232426 is an apocalyptic number.

165232426 is a deficient number, since it is larger than the sum of its proper divisors (82616216).

165232426 is an equidigital number, since it uses as much as digits as its factorization.

165232426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82616215.

The product of its digits is 17280, while the sum is 31.

The square root of 165232426 is about 12854.2765646302. The cubic root of 165232426 is about 548.7380721182.

Adding to 165232426 its reverse (624232561), we get a palindrome (789464987).

The spelling of 165232426 in words is "one hundred sixty-five million, two hundred thirty-two thousand, four hundred twenty-six".