1020042011 has 8 divisors (see below), whose sum is σ = 1081405824. Its totient is φ = 960456960.

The previous prime is 1020041989. The next prime is 1020042043. The reversal of 1020042011 is 1102400201.

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 1020042011 - 2¹⁴ = 1020025627 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1020041983 and 1020042001.

It is not an unprimeable number, because it can be changed into a prime (1020042071) 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, 443510 + ... + 445803.

It is an arithmetic number, because the mean of its divisors is an integer number (135175728).

Almost surely, 2^1020042011 is an apocalyptic number.

1020042011 is a deficient number, since it is larger than the sum of its proper divisors (61363813).

1020042011 is an equidigital number, since it uses as much as digits as its factorization.

1020042011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 889381.

The product of its (nonzero) digits is 16, while the sum is 11.

The square root of 1020042011 is about 31938.0965462878. The cubic root of 1020042011 is about 1006.6365293791.

Adding to 1020042011 its reverse (1102400201), we get a palindrome (2122442212).

The spelling of 1020042011 in words is "one billion, twenty million, forty-two thousand, eleven".