134420040 has 128 divisors (see below), whose sum is σ = 454636800. Its totient is φ = 35320320.

The previous prime is 134420029. The next prime is 134420057. The reversal of 134420040 is 40024431.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 134419995 and 134420022.

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, 75804 + ... + 77556.

It is an arithmetic number, because the mean of its divisors is an integer number (3551850).

Almost surely, 2^134420040 is an apocalyptic number.

134420040 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 134420040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (227318400).

134420040 is an abundant number, since it is smaller than the sum of its proper divisors (320216760).

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

134420040 is a wasteful number, since it uses less digits than its factorization.

134420040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1844 (or 1834 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 134420040 is about 11593.9656718484. The cubic root of 134420040 is about 512.2571238631.

Adding to 134420040 its reverse (40024431), we get a palindrome (174444471).

The spelling of 134420040 in words is "one hundred thirty-four million, four hundred twenty thousand, forty".