1020564042 has 16 divisors (see below), whose sum is σ = 2041485600. Its totient is φ = 340128432.

The previous prime is 1020564031. The next prime is 1020564053. The reversal of 1020564042 is 2404650201.

It is an interprime number because it is at equal distance from previous prime (1020564031) and next prime (1020564053).

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, 35148 + ... + 57240.

It is an arithmetic number, because the mean of its divisors is an integer number (127592850).

Almost surely, 2^1020564042 is an apocalyptic number.

1020564042 is an abundant number, since it is smaller than the sum of its proper divisors (1020921558).

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

1020564042 is a wasteful number, since it uses less digits than its factorization.

1020564042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29797.

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 1020564042 is about 31946.2680449532. The cubic root of 1020564042 is about 1006.8082235671.

It can be divided in two parts, 10205 and 64042, that added together give a palindrome (74247).

The spelling of 1020564042 in words is "one billion, twenty million, five hundred sixty-four thousand, forty-two".