43420402 has 4 divisors (see below), whose sum is σ = 65130606. Its totient is φ = 21710200.

The previous prime is 43420393. The next prime is 43420423. The reversal of 43420402 is 20402434.

43420402 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 24314761 + 19105641 = 4931^2 + 4371^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 43420402.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10855099 + ... + 10855102.

Almost surely, 2^43420402 is an apocalyptic number.

43420402 is a deficient number, since it is larger than the sum of its proper divisors (21710204).

43420402 is a wasteful number, since it uses less digits than its factorization.

43420402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21710203.

The product of its (nonzero) digits is 768, while the sum is 19.

The square root of 43420402 is about 6589.4159073472. The cubic root of 43420402 is about 351.4778382752.

Adding to 43420402 its reverse (20402434), we get a palindrome (63822836).

The spelling of 43420402 in words is "forty-three million, four hundred twenty thousand, four hundred two".