1020230042 has 48 divisors (see below), whose sum is σ = 1764380520. Its totient is φ = 439686144.

The previous prime is 1020230041. The next prime is 1020230047. The reversal of 1020230042 is 2400320201.

It can be written as a sum of positive squares in 4 ways, for example, as 590538601 + 429691441 = 24301^2 + 20729^2 .

It is a junction number, because it is equal to n+sod(n) for n = 1020229999 and 1020230026.

It is not an unprimeable number, because it can be changed into a prime (1020230041) 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 23 ways as a sum of consecutive naturals, for example, 684434 + ... + 685922.

Almost surely, 2^1020230042 is an apocalyptic number.

1020230042 is a deficient number, since it is larger than the sum of its proper divisors (744150478).

1020230042 is a wasteful number, since it uses less digits than its factorization.

1020230042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1615 (or 1596 counting only the distinct ones).

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 1020230042 is about 31941.0400895149. The cubic root of 1020230042 is about 1006.6983788722.

Adding to 1020230042 its reverse (2400320201), we get a palindrome (3420550243).

The spelling of 1020230042 in words is "one billion, twenty million, two hundred thirty thousand, forty-two".