1020553542 has 48 divisors (see below), whose sum is σ = 2292301440. Its totient is φ = 327801600.

The previous prime is 1020553519. The next prime is 1020553553. The reversal of 1020553542 is 2453550201.

It is a happy number.

1020553542 is a `hidden beast` number, since 102 + 0 + 553 + 5 + 4 + 2 = 666.

1020553542 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 130684 + ... + 138272.

It is an arithmetic number, because the mean of its divisors is an integer number (47756280).

Almost surely, 2^1020553542 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1020553542, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1146150720).

1020553542 is an abundant number, since it is smaller than the sum of its proper divisors (1271747898).

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

1020553542 is a wasteful number, since it uses less digits than its factorization.

1020553542 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7869 (or 7866 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 1020553542 is about 31946.1037060860. The cubic root of 1020553542 is about 1006.8047707306.

The spelling of 1020553542 in words is "one billion, twenty million, five hundred fifty-three thousand, five hundred forty-two".