195142100 has 54 divisors (see below), whose sum is σ = 430749774. Its totient is φ = 76728000.

The previous prime is 195142091. The next prime is 195142109. The reversal of 195142100 is 1241591.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (195142091) and next prime (195142109).

It can be written as a sum of positive squares in 3 ways, for example, as 52243984 + 142898116 = 7228^2 + 11954^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (195142109) 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 17 ways as a sum of consecutive naturals, for example, 1403831 + ... + 1403969.

Almost surely, 2^195142100 is an apocalyptic number.

195142100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 195142100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (215374887).

195142100 is an abundant number, since it is smaller than the sum of its proper divisors (235607674).

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

195142100 is a wasteful number, since it uses less digits than its factorization.

195142100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393 (or 247 counting only the distinct ones).

The product of its (nonzero) digits is 360, while the sum is 23.

The square root of 195142100 is about 13969.3271133580. The cubic root of 195142100 is about 580.0298240708.

Adding to 195142100 its reverse (1241591), we get a palindrome (196383691).

The spelling of 195142100 in words is "one hundred ninety-five million, one hundred forty-two thousand, one hundred".