134123430 has 128 divisors (see below), whose sum is σ = 382205952. Its totient is φ = 29490048.

The previous prime is 134123399. The next prime is 134123449. The reversal of 134123430 is 34321431.

It is a Harshad number since it is a multiple of its sum of digits (21).

It is a nialpdrome in base 15.

It is a junction number, because it is equal to n+sod(n) for n = 134123397 and 134123406.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 1056027 + ... + 1056153.

It is an arithmetic number, because the mean of its divisors is an integer number (2985984).

Almost surely, 2^134123430 is an apocalyptic number.

134123430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 134123430, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (191102976).

134123430 is an abundant number, since it is smaller than the sum of its proper divisors (248082522).

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

134123430 is a wasteful number, since it uses less digits than its factorization.

134123430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 298.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 134123430 is about 11581.1670396381. The cubic root of 134123430 is about 511.8800658004.

Adding to 134123430 its reverse (34321431), we get a palindrome (168444861).

The spelling of 134123430 in words is "one hundred thirty-four million, one hundred twenty-three thousand, four hundred thirty".