168085402 has 4 divisors (see below), whose sum is σ = 252128106. Its totient is φ = 84042700.

The previous prime is 168085399. The next prime is 168085417. The reversal of 168085402 is 204580861.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 204580861 = 181 ⋅1130281.

It can be written as a sum of positive squares in only one way, i.e., 162282121 + 5803281 = 12739^2 + 2409^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42021349 + ... + 42021352.

Almost surely, 2^168085402 is an apocalyptic number.

168085402 is a deficient number, since it is larger than the sum of its proper divisors (84042704).

168085402 is an equidigital number, since it uses as much as digits as its factorization.

168085402 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84042703.

The product of its (nonzero) digits is 15360, while the sum is 34.

The square root of 168085402 is about 12964.7754319155. The cubic root of 168085402 is about 551.8783185019.

The spelling of 168085402 in words is "one hundred sixty-eight million, eighty-five thousand, four hundred two".