428142445 has 8 divisors (see below), whose sum is σ = 520809336. Its totient is φ = 337821696.

The previous prime is 428142439. The next prime is 428142479. The reversal of 428142445 is 544241824.

It can be written as a sum of positive squares in 4 ways, for example, as 24964 + 428117481 = 158^2 + 20691^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 428142445 - 2¹¹ = 428140397 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 428142445.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 586132 + ... + 586861.

It is an arithmetic number, because the mean of its divisors is an integer number (65101167).

Almost surely, 2^428142445 is an apocalyptic number.

It is an amenable number.

428142445 is a deficient number, since it is larger than the sum of its proper divisors (92666891).

428142445 is a wasteful number, since it uses less digits than its factorization.

428142445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1173071.

The product of its digits is 40960, while the sum is 34.

The square root of 428142445 is about 20691.6032486610. The cubic root of 428142445 is about 753.6957996536.

The spelling of 428142445 in words is "four hundred twenty-eight million, one hundred forty-two thousand, four hundred forty-five".