426888121 has 6 divisors (see below), whose sum is σ = 469224266. Its totient is φ = 388080000.

The previous prime is 426888107. The next prime is 426888167. The reversal of 426888121 is 121888624.

It can be written as a sum of positive squares in only one way, i.e., 391604521 + 35283600 = 19789^2 + 5940^2 .

It is not a de Polignac number, because 426888121 - 2⁵ = 426888089 is a prime.

It is a super-3 number, since 3×426888121³ (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 (426880121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1763880 + ... + 1764121.

Almost surely, 2^426888121 is an apocalyptic number.

It is an amenable number.

426888121 is a deficient number, since it is larger than the sum of its proper divisors (42336145).

426888121 is a wasteful number, since it uses less digits than its factorization.

426888121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3528023 (or 3528012 counting only the distinct ones).

The product of its digits is 49152, while the sum is 40.

The square root of 426888121 is about 20661.2710402821. The cubic root of 426888121 is about 752.9590483935.

The spelling of 426888121 in words is "four hundred twenty-six million, eight hundred eighty-eight thousand, one hundred twenty-one".