1428242498281 has 3 divisors (see below), whose sum is σ = 1428243693373. Its totient is φ = 1428241303190.

The previous prime is 1428242498273. The next prime is 1428242498339. The reversal of 1428242498281 is 1828942428241.

The square root of 1428242498281 is 1195091.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is not a de Polignac number, because 1428242498281 - 2³ = 1428242498273 is a prime.

It is a super-2 number, since 2×1428242498281² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1428242498201) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 597546 + ... + 1792636.

Almost surely, 2^{1428242498281} is an apocalyptic number.

1428242498281 is the 1195091-st square number.

1428242498281 is the 597546-th centered octagonal number.

It is an amenable number.

1428242498281 is a deficient number, since it is larger than the sum of its proper divisors (1195092).

1428242498281 is an frugal number, since it uses more digits than its factorization.

1428242498281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2390182 (or 1195091 counting only the distinct ones).

The product of its digits is 4718592, while the sum is 55.

The spelling of 1428242498281 in words is "one trillion, four hundred twenty-eight billion, two hundred forty-two million, four hundred ninety-eight thousand, two hundred eighty-one".