1285422084 has 36 divisors (see below), whose sum is σ = 3251286220. Its totient is φ = 428207040.

The previous prime is 1285422043. The next prime is 1285422107. The reversal of 1285422084 is 4802245821.

1285422084 is a `hidden beast` number, since 12 + 8 + 542 + 20 + 84 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 79388100 + 1206033984 = 8910^2 + 34728^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 52422 + ... + 72930.

Almost surely, 2^1285422084 is an apocalyptic number.

It is an amenable number.

1285422084 is an abundant number, since it is smaller than the sum of its proper divisors (1965864136).

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

1285422084 is a wasteful number, since it uses less digits than its factorization.

1285422084 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22260 (or 22255 counting only the distinct ones).

The product of its (nonzero) digits is 40960, while the sum is 36.

The square root of 1285422084 is about 35852.7834902675. The cubic root of 1285422084 is about 1087.2979911741.

The spelling of 1285422084 in words is "one billion, two hundred eighty-five million, four hundred twenty-two thousand, eighty-four".