1042243020 has 144 divisors (see below), whose sum is σ = 3891101760. Its totient is φ = 219898368.

The previous prime is 1042243003. The next prime is 1042243049. The reversal of 1042243020 is 203422401.

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a junction number, because it is equal to n+sod(n) for n = 1042242984 and 1042243002.

It is an unprimeable number.

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 47 ways as a sum of consecutive naturals, for example, 15435 + ... + 48194.

It is an arithmetic number, because the mean of its divisors is an integer number (27021540).

Almost surely, 2^1042243020 is an apocalyptic number.

1042243020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1042243020 is an abundant number, since it is smaller than the sum of its proper divisors (2848858740).

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

1042243020 is a wasteful number, since it uses less digits than its factorization.

1042243020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63664 (or 63659 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 1042243020 is about 32283.7888111046. The cubic root of 1042243020 is about 1013.8872579856.

Adding to 1042243020 its reverse (203422401), we get a palindrome (1245665421).

The spelling of 1042243020 in words is "one billion, forty-two million, two hundred forty-three thousand, twenty".