1020320442 has 32 divisors (see below), whose sum is σ = 2288193600. Its totient is φ = 336984624.

The previous prime is 1020320429. The next prime is 1020320491. The reversal of 1020320442 is 2440230201.

1020320442 is a `hidden beast` number, since 1 + 0 + 203 + 20 + 442 = 666.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 80788 + ... + 92559.

It is an arithmetic number, because the mean of its divisors is an integer number (71506050).

Almost surely, 2^1020320442 is an apocalyptic number.

1020320442 is an abundant number, since it is smaller than the sum of its proper divisors (1267873158).

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

1020320442 is a wasteful number, since it uses less digits than its factorization.

1020320442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 173467 (or 173461 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 1020320442 is about 31942.4551655004. The cubic root of 1020320442 is about 1006.7281116586.

Adding to 1020320442 its reverse (2440230201), we get a palindrome (3460550643).

The spelling of 1020320442 in words is "one billion, twenty million, three hundred twenty thousand, four hundred forty-two".