1023015042 has 96 divisors (see below), whose sum is σ = 2689761600. Its totient is φ = 287292096.

The previous prime is 1023015041. The next prime is 1023015047. The reversal of 1023015042 is 2405103201.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023015041) 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 47 ways as a sum of consecutive naturals, for example, 152838 + ... + 159390.

It is an arithmetic number, because the mean of its divisors is an integer number (28018350).

Almost surely, 2^1023015042 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1023015042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1344880800).

1023015042 is an abundant number, since it is smaller than the sum of its proper divisors (1666746558).

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

1023015042 is a wasteful number, since it uses less digits than its factorization.

1023015042 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6637 (or 6624 counting only the distinct ones).

The product of its (nonzero) digits is 240, while the sum is 18.

The square root of 1023015042 is about 31984.6063286700. The cubic root of 1023015042 is about 1007.6135671515.

Adding to 1023015042 its reverse (2405103201), we get a palindrome (3428118243).

The spelling of 1023015042 in words is "one billion, twenty-three million, fifteen thousand, forty-two".