1428587442 has 40 divisors (see below), whose sum is σ = 3213643356. Its totient is φ = 474329088.

The previous prime is 1428587441. The next prime is 1428587483. The reversal of 1428587442 is 2447858241.

1428587442 is a `hidden beast` number, since 1 + 4 + 28 + 587 + 4 + 42 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 1355638761 + 72948681 = 36819^2 + 8541^2 .

It is not an unprimeable number, because it can be changed into a prime (1428587441) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 24478 + ... + 58790.

Almost surely, 2^1428587442 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1428587442, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1606821678).

1428587442 is an abundant number, since it is smaller than the sum of its proper divisors (1785055914).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1428587442 is a wasteful number, since it uses less digits than its factorization.

1428587442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34584 (or 34575 counting only the distinct ones).

The product of its digits is 573440, while the sum is 45.

The square root of 1428587442 is about 37796.6591380773. The cubic root of 1428587442 is about 1126.2520886155.

The spelling of 1428587442 in words is "one billion, four hundred twenty-eight million, five hundred eighty-seven thousand, four hundred forty-two".