1081420208 has 40 divisors (see below), whose sum is σ = 2364558480. Its totient is φ = 474602240.

The previous prime is 1081420159. The next prime is 1081420229. The reversal of 1081420208 is 8020241801.

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, 100835 + ... + 111042.

It is an arithmetic number, because the mean of its divisors is an integer number (59113962).

Almost surely, 2^1081420208 is an apocalyptic number.

It is an amenable number.

1081420208 is an abundant number, since it is smaller than the sum of its proper divisors (1283138272).

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

1081420208 is a wasteful number, since it uses less digits than its factorization.

1081420208 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211925 (or 211919 counting only the distinct ones).

The product of its (nonzero) digits is 1024, while the sum is 26.

The square root of 1081420208 is about 32884.9541279899. The cubic root of 1081420208 is about 1026.4350972261.

The spelling of 1081420208 in words is "one billion, eighty-one million, four hundred twenty thousand, two hundred eight".