161142100 has 36 divisors (see below), whose sum is σ = 399634144. Its totient is φ = 55248480.

The previous prime is 161142073. The next prime is 161142109. The reversal of 161142100 is 1241161.

161142100 is nontrivially palindromic in base 13.

161142100 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent 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 11 ways as a sum of consecutive naturals, for example, 114402 + ... + 115801.

Almost surely, 2^161142100 is an apocalyptic number.

161142100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

161142100 is an abundant number, since it is smaller than the sum of its proper divisors (238492044).

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

161142100 is a wasteful number, since it uses less digits than its factorization.

161142100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 230224 (or 230217 counting only the distinct ones).

The product of its (nonzero) digits is 48, while the sum is 16.

The square root of 161142100 is about 12694.1758298836. The cubic root of 161142100 is about 544.1721854383.

Adding to 161142100 its reverse (1241161), we get a palindrome (162383261).

The spelling of 161142100 in words is "one hundred sixty-one million, one hundred forty-two thousand, one hundred".