426291521440 has 48 divisors (see below), whose sum is σ = 1007186600448. Its totient is φ = 170504269056.

The previous prime is 426291521377. The next prime is 426291521519. The reversal of 426291521440 is 44125192624.

It is a super-2 number, since 2×426291521440² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 426291521393 and 426291521402.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 2308369 + ... + 2486191.

It is an arithmetic number, because the mean of its divisors is an integer number (20983054176).

Almost surely, 2^426291521440 is an apocalyptic number.

426291521440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

426291521440 is an abundant number, since it is smaller than the sum of its proper divisors (580895079008).

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

426291521440 is a wasteful number, since it uses less digits than its factorization.

426291521440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 192821 (or 192813 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 40.

The spelling of 426291521440 in words is "four hundred twenty-six billion, two hundred ninety-one million, five hundred twenty-one thousand, four hundred forty".