134665040 has 20 divisors (see below), whose sum is σ = 313096404. Its totient is φ = 53865984.

The previous prime is 134665039. The next prime is 134665043. The reversal of 134665040 is 40566431.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 61528336 + 73136704 = 7844^2 + 8552^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a junction number, because it is equal to n+sod(n) for n = 134664994 and 134665012.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134665043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 841577 + ... + 841736.

Almost surely, 2^134665040 is an apocalyptic number.

134665040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

134665040 is an abundant number, since it is smaller than the sum of its proper divisors (178431364).

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

134665040 is a wasteful number, since it uses less digits than its factorization.

134665040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1683326 (or 1683320 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

The square root of 134665040 is about 11604.5267029724. The cubic root of 134665040 is about 512.5681559169.

The spelling of 134665040 in words is "one hundred thirty-four million, six hundred sixty-five thousand, forty".