40797842 has 4 divisors (see below), whose sum is σ = 61196766. Its totient is φ = 20398920.

The previous prime is 40797821. The next prime is 40797853. The reversal of 40797842 is 24879704.

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., 34351321 + 6446521 = 5861^2 + 2539^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 40797842.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10199459 + ... + 10199462.

Almost surely, 2^40797842 is an apocalyptic number.

40797842 is a deficient number, since it is larger than the sum of its proper divisors (20398924).

40797842 is a wasteful number, since it uses less digits than its factorization.

40797842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20398923.

The product of its (nonzero) digits is 112896, while the sum is 41.

The square root of 40797842 is about 6387.3188428323. The cubic root of 40797842 is about 344.2540544848.

The spelling of 40797842 in words is "forty million, seven hundred ninety-seven thousand, eight hundred forty-two".