428086042 has 4 divisors (see below), whose sum is σ = 642129066. Its totient is φ = 214043020.

The previous prime is 428086039. The next prime is 428086103. The reversal of 428086042 is 240680824.

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., 419389441 + 8696601 = 20479^2 + 2949^2 .

It is a junction number, because it is equal to n+sod(n) for n = 428085989 and 428086007.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 107021509 + ... + 107021512.

Almost surely, 2^428086042 is an apocalyptic number.

428086042 is a deficient number, since it is larger than the sum of its proper divisors (214043024).

428086042 is a wasteful number, since it uses less digits than its factorization.

428086042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214043023.

The product of its (nonzero) digits is 24576, while the sum is 34.

The square root of 428086042 is about 20690.2402596007. The cubic root of 428086042 is about 753.6627011902.

The spelling of 428086042 in words is "four hundred twenty-eight million, eighty-six thousand, forty-two".