161142107 has 8 divisors (see below), whose sum is σ = 185884416. Its totient is φ = 136830312.

The previous prime is 161142073. The next prime is 161142109. The reversal of 161142107 is 701241161.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 161142107 - 2⁶ = 161142043 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161142109) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106823 + ... + 108320.

It is an arithmetic number, because the mean of its divisors is an integer number (23235552).

Almost surely, 2^161142107 is an apocalyptic number.

161142107 is a deficient number, since it is larger than the sum of its proper divisors (24742309).

161142107 is a wasteful number, since it uses less digits than its factorization.

161142107 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 215257.

The product of its (nonzero) digits is 336, while the sum is 23.

The square root of 161142107 is about 12694.1761056006. The cubic root of 161142107 is about 544.1721933179.

Adding to 161142107 its reverse (701241161), we get a palindrome (862383268).

The spelling of 161142107 in words is "one hundred sixty-one million, one hundred forty-two thousand, one hundred seven".