426842987 has 8 divisors (see below), whose sum is σ = 452180736. Its totient is φ = 401530752.

The previous prime is 426842963. The next prime is 426843017. The reversal of 426842987 is 789248624.

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

It is not a de Polignac number, because 426842987 - 2¹⁰ = 426841963 is a prime.

It is a super-3 number, since 3×426842987³ (a number of 27 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (426842917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36278 + ... + 46580.

It is an arithmetic number, because the mean of its divisors is an integer number (56522592).

Almost surely, 2^426842987 is an apocalyptic number.

426842987 is a deficient number, since it is larger than the sum of its proper divisors (25337749).

426842987 is a wasteful number, since it uses less digits than its factorization.

426842987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12757.

The product of its digits is 1548288, while the sum is 50.

The square root of 426842987 is about 20660.1787746379. The cubic root of 426842987 is about 752.9325111895.

The spelling of 426842987 in words is "four hundred twenty-six million, eight hundred forty-two thousand, nine hundred eighty-seven".