1020042103 has 8 divisors (see below), whose sum is σ = 1039105280. Its totient is φ = 1001091960.

The previous prime is 1020042077. The next prime is 1020042139. The reversal of 1020042103 is 3012400201.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1020042103 - 2⁵ = 1020042071 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1020042503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9933 + ... + 46246.

It is an arithmetic number, because the mean of its divisors is an integer number (129888160).

Almost surely, 2^1020042103 is an apocalyptic number.

1020042103 is a deficient number, since it is larger than the sum of its proper divisors (19063177).

1020042103 is an equidigital number, since it uses as much as digits as its factorization.

1020042103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 56517.

The product of its (nonzero) digits is 48, while the sum is 13.

The square root of 1020042103 is about 31938.0979865740. The cubic root of 1020042103 is about 1006.6365596427.

Adding to 1020042103 its reverse (3012400201), we get a palindrome (4032442304).

The spelling of 1020042103 in words is "one billion, twenty million, forty-two thousand, one hundred three".