40190201 has 4 divisors (see below), whose sum is σ = 41576100. Its totient is φ = 38804304.

The previous prime is 40190197. The next prime is 40190221. The reversal of 40190201 is 10209104.

It is a happy number.

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

It can be written as a sum of positive squares in 2 ways, for example, as 13512976 + 26677225 = 3676^2 + 5165^2 .

It is a cyclic number.

It is not a de Polignac number, because 40190201 - 2² = 40190197 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40190201.

It is not an unprimeable number, because it can be changed into a prime (40190221) 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, 692906 + ... + 692963.

It is an arithmetic number, because the mean of its divisors is an integer number (10394025).

Almost surely, 2^40190201 is an apocalyptic number.

It is an amenable number.

40190201 is a deficient number, since it is larger than the sum of its proper divisors (1385899).

40190201 is a wasteful number, since it uses less digits than its factorization.

40190201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1385898.

The product of its (nonzero) digits is 72, while the sum is 17.

The square root of 40190201 is about 6339.5741970577. The cubic root of 40190201 is about 342.5363976450.

Adding to 40190201 its reverse (10209104), we get a palindrome (50399305).

It can be divided in two parts, 40190 and 201, that multiplied together give a triangular number (8078190 = T₄₀₁₉).

The spelling of 40190201 in words is "forty million, one hundred ninety thousand, two hundred one".