134021405440 has 72 divisors (see below), whose sum is σ = 345717278928. Its totient is φ = 49484820480.

The previous prime is 134021405431. The next prime is 134021405443. The reversal of 134021405440 is 44504120431.

It is a super-2 number, since 2×134021405440² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 134021405399 and 134021405408.

It is not an unprimeable number, because it can be changed into a prime (134021405443) 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, 4010446 + ... + 4043725.

It is an arithmetic number, because the mean of its divisors is an integer number (4801628874).

Almost surely, 2^134021405440 is an apocalyptic number.

134021405440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

134021405440 is an abundant number, since it is smaller than the sum of its proper divisors (211695873488).

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

134021405440 is an equidigital number, since it uses as much as digits as its factorization.

134021405440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8054205 (or 8054191 counting only the distinct ones).

The product of its (nonzero) digits is 7680, while the sum is 28.

Adding to 134021405440 its reverse (44504120431), we get a palindrome (178525525871).

The spelling of 134021405440 in words is "one hundred thirty-four billion, twenty-one million, four hundred five thousand, four hundred forty".