40170442 has 8 divisors (see below), whose sum is σ = 64890756. Its totient is φ = 18540192.

The previous prime is 40170437. The next prime is 40170457. The reversal of 40170442 is 24407104.

It can be written as a sum of positive squares in 2 ways, for example, as 31708161 + 8462281 = 5631^2 + 2909^2 .

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

It is a super-2 number, since 2×40170442² = 3227328820950728, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 772483 + ... + 772534.

Almost surely, 2^40170442 is an apocalyptic number.

40170442 is a deficient number, since it is larger than the sum of its proper divisors (24720314).

40170442 is a wasteful number, since it uses less digits than its factorization.

40170442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1545032.

The product of its (nonzero) digits is 896, while the sum is 22.

The square root of 40170442 is about 6338.0156200502. The cubic root of 40170442 is about 342.4802538921.

Adding to 40170442 its reverse (24407104), we get a palindrome (64577546).

The spelling of 40170442 in words is "forty million, one hundred seventy thousand, four hundred forty-two".