168537042 has 12 divisors (see below), whose sum is σ = 365163630. Its totient is φ = 56179008.

The previous prime is 168537037. The next prime is 168537059. The reversal of 168537042 is 240735861.

168537042 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 139925241 + 28611801 = 11829^2 + 5349^2 .

It is a super-2 number, since 2×168537042² = 56809469052219528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 168536988 and 168537006.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 4681567 + ... + 4681602.

Almost surely, 2^168537042 is an apocalyptic number.

168537042 is an abundant number, since it is smaller than the sum of its proper divisors (196626588).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

168537042 is a wasteful number, since it uses less digits than its factorization.

168537042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9363177 (or 9363174 counting only the distinct ones).

The product of its (nonzero) digits is 40320, while the sum is 36.

The square root of 168537042 is about 12982.1817118695. The cubic root of 168537042 is about 552.3721694669.

The spelling of 168537042 in words is "one hundred sixty-eight million, five hundred thirty-seven thousand, forty-two".