162821426 has 4 divisors (see below), whose sum is σ = 244232142. Its totient is φ = 81410712.

The previous prime is 162821419. The next prime is 162821429. The reversal of 162821426 is 624128261.

162821426 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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., 115885225 + 46936201 = 10765^2 + 6851^2 .

It is a junction number, because it is equal to n+sod(n) for n = 162821392 and 162821401.

It is not an unprimeable number, because it can be changed into a prime (162821429) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 40705355 + ... + 40705358.

Almost surely, 2^162821426 is an apocalyptic number.

162821426 is a deficient number, since it is larger than the sum of its proper divisors (81410716).

162821426 is an equidigital number, since it uses as much as digits as its factorization.

162821426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81410715.

The product of its digits is 9216, while the sum is 32.

The square root of 162821426 is about 12760.1499207494. The cubic root of 162821426 is about 546.0560015372.

Adding to 162821426 its reverse (624128261), we get a palindrome (786949687).

The spelling of 162821426 in words is "one hundred sixty-two million, eight hundred twenty-one thousand, four hundred twenty-six".