40125198 has 8 divisors (see below), whose sum is σ = 80250408. Its totient is φ = 13375064.

The previous prime is 40125193. The next prime is 40125199. The reversal of 40125198 is 89152104.

It is a happy number.

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

40125198 is an admirable number.

It is a super-2 number, since 2×40125198² = 3220063029078408, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40125193) 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, 3343761 + ... + 3343772.

It is an arithmetic number, because the mean of its divisors is an integer number (10031301).

Almost surely, 2^40125198 is an apocalyptic number.

40125198 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

40125198 is a wasteful number, since it uses less digits than its factorization.

40125198 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6687538.

The product of its (nonzero) digits is 2880, while the sum is 30.

The square root of 40125198 is about 6334.4453585140. The cubic root of 40125198 is about 342.3516269972.

The spelling of 40125198 in words is "forty million, one hundred twenty-five thousand, one hundred ninety-eight".