20134021340 has 48 divisors (see below), whose sum is σ = 42942614400. Its totient is φ = 7928632320.

The previous prime is 20134021339. The next prime is 20134021361. The reversal of 20134021340 is 4312043102.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 306845 + ... + 366635.

It is an arithmetic number, because the mean of its divisors is an integer number (894637800).

Almost surely, 2^20134021340 is an apocalyptic number.

20134021340 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20134021340 is an abundant number, since it is smaller than the sum of its proper divisors (22808593060).

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

20134021340 is a wasteful number, since it uses less digits than its factorization.

20134021340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60062 (or 60060 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

Adding to 20134021340 its reverse (4312043102), we get a palindrome (24446064442).

The spelling of 20134021340 in words is "twenty billion, one hundred thirty-four million, twenty-one thousand, three hundred forty".