168263842 has 4 divisors (see below), whose sum is σ = 252395766. Its totient is φ = 84131920.

The previous prime is 168263833. The next prime is 168263869. The reversal of 168263842 is 248362861.

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., 166384201 + 1879641 = 12899^2 + 1371^2 .

It is a junction number, because it is equal to n+sod(n) for n = 168263795 and 168263804.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42065959 + ... + 42065962.

Almost surely, 2^168263842 is an apocalyptic number.

168263842 is a deficient number, since it is larger than the sum of its proper divisors (84131924).

168263842 is an equidigital number, since it uses as much as digits as its factorization.

168263842 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84131923.

The product of its digits is 110592, while the sum is 40.

The square root of 168263842 is about 12971.6553299878. The cubic root of 168263842 is about 552.0735413641.

The spelling of 168263842 in words is "one hundred sixty-eight million, two hundred sixty-three thousand, eight hundred forty-two".