194142280 has 32 divisors (see below), whose sum is σ = 437225400. Its totient is φ = 77584896.

The previous prime is 194142253. The next prime is 194142281. The reversal of 194142280 is 82241491.

It can be written as a sum of positive squares in 4 ways, for example, as 190053796 + 4088484 = 13786^2 + 2022^2 .

It is not an unprimeable number, because it can be changed into a prime (194142281) 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, 70204 + ... + 72916.

Almost surely, 2^194142280 is an apocalyptic number.

194142280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

194142280 is an abundant number, since it is smaller than the sum of its proper divisors (243083120).

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

194142280 is a wasteful number, since it uses less digits than its factorization.

194142280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4513 (or 4509 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 194142280 is about 13933.4948953951. The cubic root of 194142280 is about 579.0375238055.

The spelling of 194142280 in words is "one hundred ninety-four million, one hundred forty-two thousand, two hundred eighty".