134390840 has 32 divisors (see below), whose sum is σ = 315528480. Its totient is φ = 51418752.

The previous prime is 134390833. The next prime is 134390887. The reversal of 134390840 is 48093431.

134390840 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a junction number, because it is equal to n+sod(n) for n = 134390797 and 134390806.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 72119 + ... + 73958.

It is an arithmetic number, because the mean of its divisors is an integer number (9860265).

Almost surely, 2^134390840 is an apocalyptic number.

134390840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

134390840 is an abundant number, since it is smaller than the sum of its proper divisors (181137640).

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

134390840 is a wasteful number, since it uses less digits than its factorization.

134390840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 146111 (or 146107 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 32.

The square root of 134390840 is about 11592.7063276872. The cubic root of 134390840 is about 512.2200287215.

The spelling of 134390840 in words is "one hundred thirty-four million, three hundred ninety thousand, eight hundred forty".