43420442 has 8 divisors (see below), whose sum is σ = 70140756. Its totient is φ = 20040192.

The previous prime is 43420439. The next prime is 43420451. The reversal of 43420442 is 24402434.

It can be written as a sum of positive squares in 2 ways, for example, as 32137561 + 11282881 = 5669^2 + 3359^2 .

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

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, 834983 + ... + 835034.

Almost surely, 2^43420442 is an apocalyptic number.

43420442 is a deficient number, since it is larger than the sum of its proper divisors (26720314).

43420442 is a wasteful number, since it uses less digits than its factorization.

43420442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1670032.

The product of its (nonzero) digits is 3072, while the sum is 23.

The square root of 43420442 is about 6589.4189425169. The cubic root of 43420442 is about 351.4779462053.

Adding to 43420442 its reverse (24402434), we get a palindrome (67822876).

The spelling of 43420442 in words is "forty-three million, four hundred twenty thousand, four hundred forty-two".