40299442 has 8 divisors (see below), whose sum is σ = 62399232. Its totient is φ = 19499700.

The previous prime is 40299439. The next prime is 40299443. The reversal of 40299442 is 24499204.

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

It is a super-2 number, since 2×40299442² = 3248090051022728, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 40299398 and 40299407.

It is not an unprimeable number, because it can be changed into a prime (40299443) 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, 324934 + ... + 325057.

It is an arithmetic number, because the mean of its divisors is an integer number (7799904).

Almost surely, 2^40299442 is an apocalyptic number.

40299442 is a deficient number, since it is larger than the sum of its proper divisors (22099790).

40299442 is a wasteful number, since it uses less digits than its factorization.

40299442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 650024.

The product of its (nonzero) digits is 20736, while the sum is 34.

The square root of 40299442 is about 6348.1841498180. The cubic root of 40299442 is about 342.8464663177.

The spelling of 40299442 in words is "forty million, two hundred ninety-nine thousand, four hundred forty-two".