84135424 has 40 divisors (see below), whose sum is σ = 169875288. Its totient is φ = 41625600.

The previous prime is 84135421. The next prime is 84135427. The reversal of 84135424 is 42453148.

It is an interprime number because it is at equal distance from previous prime (84135421) and next prime (84135427).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84135421) 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, 50899 + ... + 52525.

Almost surely, 2^84135424 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 84135424, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (84937644).

84135424 is an abundant number, since it is smaller than the sum of its proper divisors (85739864).

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

84135424 is a wasteful number, since it uses less digits than its factorization.

84135424 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1746 (or 1730 counting only the distinct ones).

The product of its digits is 15360, while the sum is 31.

The square root of 84135424 is about 9172.5363994917. The cubic root of 84135424 is about 438.1871415917.

The spelling of 84135424 in words is "eighty-four million, one hundred thirty-five thousand, four hundred twenty-four".