134402402420 has 96 divisors (see below), whose sum is σ = 331758443520. Its totient is φ = 45090984960.

The previous prime is 134402402359. The next prime is 134402402423. The reversal of 134402402420 is 24204204431.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (26).

It is a self number, because there is not a number n which added to its sum of digits gives 134402402420.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134402402423) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 6118016 + ... + 6139944.

It is an arithmetic number, because the mean of its divisors is an integer number (3455817120).

Almost surely, 2^134402402420 is an apocalyptic number.

134402402420 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 134402402420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (165879221760).

134402402420 is an abundant number, since it is smaller than the sum of its proper divisors (197356041100).

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

134402402420 is a wasteful number, since it uses less digits than its factorization.

134402402420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 24105 (or 24103 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 26.

Adding to 134402402420 its reverse (24204204431), we get a palindrome (158606606851).

The spelling of 134402402420 in words is "one hundred thirty-four billion, four hundred two million, four hundred two thousand, four hundred twenty".