168942436 has 24 divisors (see below), whose sum is σ = 328665344. Its totient is φ = 75457440.

The previous prime is 168942421. The next prime is 168942437. The reversal of 168942436 is 634249861.

It is a happy number.

168942436 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×168942436² = 57083093363228192, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 168942392 and 168942401.

It is not an unprimeable number, because it can be changed into a prime (168942437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50790 + ... + 54013.

Almost surely, 2^168942436 is an apocalyptic number.

It is an amenable number.

168942436 is a deficient number, since it is larger than the sum of its proper divisors (159722908).

168942436 is a wasteful number, since it uses less digits than its factorization.

168942436 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 104851 (or 104849 counting only the distinct ones).

The product of its digits is 248832, while the sum is 43.

The square root of 168942436 is about 12997.7858114373. The cubic root of 168942436 is about 552.8147013808.

The spelling of 168942436 in words is "one hundred sixty-eight million, nine hundred forty-two thousand, four hundred thirty-six".