426587281 has 4 divisors (see below), whose sum is σ = 431987200. Its totient is φ = 421187364.

The previous prime is 426587263. The next prime is 426587299. The reversal of 426587281 is 182785624.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is an interprime number because it is at equal distance from previous prime (426587263) and next prime (426587299).

It is a cyclic number.

It is not a de Polignac number, because 426587281 - 2⁷ = 426587153 is a prime.

It is a super-2 number, since 2×426587281² = 363953416621945922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (426587201) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2699841 + ... + 2699998.

It is an arithmetic number, because the mean of its divisors is an integer number (107996800).

Almost surely, 2^426587281 is an apocalyptic number.

It is an amenable number.

426587281 is a deficient number, since it is larger than the sum of its proper divisors (5399919).

426587281 is an equidigital number, since it uses as much as digits as its factorization.

426587281 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5399918.

The product of its digits is 215040, while the sum is 43.

The square root of 426587281 is about 20653.9894693495. The cubic root of 426587281 is about 752.7821297260.

The spelling of 426587281 in words is "four hundred twenty-six million, five hundred eighty-seven thousand, two hundred eighty-one".