1020042001 has 8 divisors (see below), whose sum is σ = 1138652064. Its totient is φ = 905745120.

The previous prime is 1020041989. The next prime is 1020042043. The reversal of 1020042001 is 1002400201.

1020042001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 1020042001 - 2⁷ = 1020041873 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1020042071) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1077796 + ... + 1078741.

It is an arithmetic number, because the mean of its divisors is an integer number (142331508).

Almost surely, 2^1020042001 is an apocalyptic number.

1020042001 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1020042001 is a deficient number, since it is larger than the sum of its proper divisors (118610063).

1020042001 is a wasteful number, since it uses less digits than its factorization.

1020042001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2156591.

The product of its (nonzero) digits is 16, while the sum is 10.

The square root of 1020042001 is about 31938.0963897349. The cubic root of 1020042001 is about 1006.6365260896.

Adding to 1020042001 its reverse (1002400201), we get a palindrome (2022442202).

The spelling of 1020042001 in words is "one billion, twenty million, forty-two thousand, one".