40199042 has 8 divisors (see below), whose sum is σ = 64936956. Its totient is φ = 18553392.

The previous prime is 40199011. The next prime is 40199059. The reversal of 40199042 is 24099104.

It can be written as a sum of positive squares in 2 ways, for example, as 36735721 + 3463321 = 6061^2 + 1861^2 .

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

It is a junction number, because it is equal to n+sod(n) for n = 40198996 and 40199014.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 773033 + ... + 773084.

Almost surely, 2^40199042 is an apocalyptic number.

40199042 is a deficient number, since it is larger than the sum of its proper divisors (24737914).

40199042 is a wasteful number, since it uses less digits than its factorization.

40199042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1546132.

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 40199042 is about 6340.2714452932. The cubic root of 40199042 is about 342.5615127409.

The spelling of 40199042 in words is "forty million, one hundred ninety-nine thousand, forty-two".