134455142220 has 96 divisors (see below), whose sum is σ = 430916226048. Its totient is φ = 30685477632.

The previous prime is 134455142191. The next prime is 134455142251. The reversal of 134455142220 is 22241554431.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 29137 + ... + 519383.

It is an arithmetic number, because the mean of its divisors is an integer number (4488710688).

Almost surely, 2^134455142220 is an apocalyptic number.

134455142220 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 134455142220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (215458113024).

134455142220 is an abundant number, since it is smaller than the sum of its proper divisors (296461083828).

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

134455142220 is a wasteful number, since it uses less digits than its factorization.

134455142220 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 490919 (or 490917 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 33.

Adding to 134455142220 its reverse (22241554431), we get a palindrome (156696696651).

The spelling of 134455142220 in words is "one hundred thirty-four billion, four hundred fifty-five million, one hundred forty-two thousand, two hundred twenty".