40121194 has 8 divisors (see below), whose sum is σ = 60285060. Its totient is φ = 20026176.

The previous prime is 40121189. The next prime is 40121197. The reversal of 40121194 is 49112104.

It can be written as a sum of positive squares in 2 ways, for example, as 38900169 + 1221025 = 6237^2 + 1105^2 .

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

It is not an unprimeable number, because it can be changed into a prime (40121197) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 15729 + ... + 18100.

Almost surely, 2^40121194 is an apocalyptic number.

40121194 is a deficient number, since it is larger than the sum of its proper divisors (20163866).

40121194 is a wasteful number, since it uses less digits than its factorization.

40121194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34424.

The product of its (nonzero) digits is 288, while the sum is 22.

The square root of 40121194 is about 6334.1293008590. The cubic root of 40121194 is about 342.3402391280.

Adding to 40121194 its reverse (49112104), we get a palindrome (89233298).

The spelling of 40121194 in words is "forty million, one hundred twenty-one thousand, one hundred ninety-four".