161908142 has 8 divisors (see below), whose sum is σ = 264940632. Its totient is φ = 73594600.

The previous prime is 161908127. The next prime is 161908147. The reversal of 161908142 is 241809161.

161908142 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a junction number, because it is equal to n+sod(n) for n = 161908099 and 161908108.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (161908147) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3679709 + ... + 3679752.

It is an arithmetic number, because the mean of its divisors is an integer number (33117579).

Almost surely, 2^161908142 is an apocalyptic number.

161908142 is a deficient number, since it is larger than the sum of its proper divisors (103032490).

161908142 is a wasteful number, since it uses less digits than its factorization.

161908142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7359474.

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 161908142 is about 12724.3130266431. The cubic root of 161908142 is about 545.0331231447.

The spelling of 161908142 in words is "one hundred sixty-one million, nine hundred eight thousand, one hundred forty-two".