40100194 has 4 divisors (see below), whose sum is σ = 60150294. Its totient is φ = 20050096.

The previous prime is 40100191. The next prime is 40100213. The reversal of 40100194 is 49100104.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 27405225 + 12694969 = 5235^2 + 3563^2 .

It is not an unprimeable number, because it can be changed into a prime (40100191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10025047 + ... + 10025050.

Almost surely, 2^40100194 is an apocalyptic number.

40100194 is a deficient number, since it is larger than the sum of its proper divisors (20050100).

40100194 is a wasteful number, since it uses less digits than its factorization.

40100194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20050099.

The product of its (nonzero) digits is 144, while the sum is 19.

The square root of 40100194 is about 6332.4713974877. The cubic root of 40100194 is about 342.2805001309.

Adding to 40100194 its reverse (49100104), we get a palindrome (89200298).

The spelling of 40100194 in words is "forty million, one hundred thousand, one hundred ninety-four".