1421559568 has 80 divisors (see below), whose sum is σ = 3248917056. Its totient is φ = 594040320.

The previous prime is 1421559553. The next prime is 1421559577. The reversal of 1421559568 is 8659551241.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 632655 + ... + 634897.

Almost surely, 2^1421559568 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1421559568, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1624458528).

1421559568 is an abundant number, since it is smaller than the sum of its proper divisors (1827357488).

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

1421559568 is a wasteful number, since it uses less digits than its factorization.

1421559568 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2552 (or 2546 counting only the distinct ones).

The product of its digits is 432000, while the sum is 46.

The square root of 1421559568 is about 37703.5750029092. The cubic root of 1421559568 is about 1124.4022023682.

The spelling of 1421559568 in words is "one billion, four hundred twenty-one million, five hundred fifty-nine thousand, five hundred sixty-eight".