43402142 has 12 divisors (see below), whose sum is σ = 75732480. Its totient is φ = 18600876.

The previous prime is 43402133. The next prime is 43402157. The reversal of 43402142 is 24120434.

43402142 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

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 in 5 ways as a sum of consecutive naturals, for example, 221342 + ... + 221537.

It is an arithmetic number, because the mean of its divisors is an integer number (6311040).

Almost surely, 2^43402142 is an apocalyptic number.

43402142 is a deficient number, since it is larger than the sum of its proper divisors (32330338).

43402142 is a wasteful number, since it uses less digits than its factorization.

43402142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 442895 (or 442888 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 43402142 is about 6588.0302063667. The cubic root of 43402142 is about 351.4285612463.

Adding to 43402142 its reverse (24120434), we get a palindrome (67522576).

The spelling of 43402142 in words is "forty-three million, four hundred two thousand, one hundred forty-two".