168742038 has 8 divisors (see below), whose sum is σ = 337484088. Its totient is φ = 56247344.

The previous prime is 168742037. The next prime is 168742061. The reversal of 168742038 is 830247861.

It is a sphenic number, since it is the product of 3 distinct primes.

168742038 is an admirable number.

It is a junction number, because it is equal to n+sod(n) for n = 168741987 and 168742005.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168742031) 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 3 ways as a sum of consecutive naturals, for example, 14061831 + ... + 14061842.

It is an arithmetic number, because the mean of its divisors is an integer number (42185511).

Almost surely, 2^168742038 is an apocalyptic number.

168742038 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

168742038 is a wasteful number, since it uses less digits than its factorization.

168742038 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28123678.

The product of its (nonzero) digits is 64512, while the sum is 39.

The square root of 168742038 is about 12990.0745956288. The cubic root of 168742038 is about 552.5960336197.

Adding to 168742038 its reverse (830247861), we get a palindrome (998989899).

The spelling of 168742038 in words is "one hundred sixty-eight million, seven hundred forty-two thousand, thirty-eight".