43450042 has 8 divisors (see below), whose sum is σ = 65211156. Its totient is φ = 21712992.

The previous prime is 43450031. The next prime is 43450097. The reversal of 43450042 is 24005434.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 25310961 + 18139081 = 5031^2 + 4259^2 .

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

It is a super-2 number, since 2×43450042² = 3775812299603528, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 43449995 and 43450022.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 483 + ... + 9334.

Almost surely, 2^43450042 is an apocalyptic number.

43450042 is a deficient number, since it is larger than the sum of its proper divisors (21761114).

43450042 is a wasteful number, since it uses less digits than its factorization.

43450042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12032.

The product of its (nonzero) digits is 1920, while the sum is 22.

The square root of 43450042 is about 6591.6645849133. The cubic root of 43450042 is about 351.5577963367.

Adding to 43450042 its reverse (24005434), we get a palindrome (67455476).

The spelling of 43450042 in words is "forty-three million, four hundred fifty thousand, forty-two".