134780840 has 32 divisors (see below), whose sum is σ = 305025480. Its totient is φ = 53597952.

The previous prime is 134780837. The next prime is 134780843. The reversal of 134780840 is 48087431.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (134780837) and next prime (134780843).

It can be written as a sum of positive squares in 4 ways, for example, as 133033156 + 1747684 = 11534^2 + 1322^2 .

It is a super-2 number, since 2×134780840² = 36331749662211200, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 134780840.

It is not an unprimeable number, because it can be changed into a prime (134780843) 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, 2819 + ... + 16658.

Almost surely, 2^134780840 is an apocalyptic number.

134780840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

134780840 is an abundant number, since it is smaller than the sum of its proper divisors (170244640).

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

134780840 is a wasteful number, since it uses less digits than its factorization.

134780840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19661 (or 19657 counting only the distinct ones).

The product of its (nonzero) digits is 21504, while the sum is 35.

The square root of 134780840 is about 11609.5150630851. The cubic root of 134780840 is about 512.7150348869.

The spelling of 134780840 in words is "one hundred thirty-four million, seven hundred eighty thousand, eight hundred forty".