134189840 has 40 divisors (see below), whose sum is σ = 330347160. Its totient is φ = 50518016.

The previous prime is 134189831. The next prime is 134189849. The reversal of 134189840 is 48981431.

It is an interprime number because it is at equal distance from previous prime (134189831) and next prime (134189849).

It can be written as a sum of positive squares in 4 ways, for example, as 3041536 + 131148304 = 1744^2 + 11452^2 .

It is a tau number, because it is divible by the number of its divisors (40).

It is a super-3 number, since 3×134189840³ (a number of 25 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 134189794 and 134189803.

It is not an unprimeable number, because it can be changed into a prime (134189849) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47975 + ... + 50694.

It is an arithmetic number, because the mean of its divisors is an integer number (8258679).

Almost surely, 2^134189840 is an apocalyptic number.

134189840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

134189840 is an abundant number, since it is smaller than the sum of its proper divisors (196157320).

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

134189840 is a wasteful number, since it uses less digits than its factorization.

134189840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 98699 (or 98693 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 38.

The square root of 134189840 is about 11584.0338397296. The cubic root of 134189840 is about 511.9645361179.

The spelling of 134189840 in words is "one hundred thirty-four million, one hundred eighty-nine thousand, eight hundred forty".