40202291 has 8 divisors (see below), whose sum is σ = 41227824. Its totient is φ = 39180960.

The previous prime is 40202273. The next prime is 40202293. The reversal of 40202291 is 19220204.

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

It is a cyclic number.

It is not a de Polignac number, because 40202291 - 2¹⁰ = 40201267 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40202293) 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, 28421 + ... + 29801.

It is an arithmetic number, because the mean of its divisors is an integer number (5153478).

Almost surely, 2^40202291 is an apocalyptic number.

40202291 is a deficient number, since it is larger than the sum of its proper divisors (1025533).

40202291 is a wasteful number, since it uses less digits than its factorization.

40202291 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2101.

The product of its (nonzero) digits is 288, while the sum is 20.

The square root of 40202291 is about 6340.5276594302. The cubic root of 40202291 is about 342.5707414216.

Adding to 40202291 its reverse (19220204), we get a palindrome (59422495).

The spelling of 40202291 in words is "forty million, two hundred two thousand, two hundred ninety-one".