1020864342 has 16 divisors (see below), whose sum is σ = 2048297472. Its totient is φ = 339193320.

The previous prime is 1020864329. The next prime is 1020864349. The reversal of 1020864342 is 2434680201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020864349) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 271678 + ... + 275409.

It is an arithmetic number, because the mean of its divisors is an integer number (128018592).

Almost surely, 2^1020864342 is an apocalyptic number.

1020864342 is an abundant number, since it is smaller than the sum of its proper divisors (1027433130).

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

1020864342 is a wasteful number, since it uses less digits than its factorization.

1020864342 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547403.

The product of its (nonzero) digits is 9216, while the sum is 30.

The square root of 1020864342 is about 31950.9677787700. The cubic root of 1020864342 is about 1006.9069646708.

The spelling of 1020864342 in words is "one billion, twenty million, eight hundred sixty-four thousand, three hundred forty-two".