1023442040 has 64 divisors (see below), whose sum is σ = 2410724160. Its totient is φ = 390297600.

The previous prime is 1023442039. The next prime is 1023442051. The reversal of 1023442040 is 402443201.

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 308390 + ... + 311690.

It is an arithmetic number, because the mean of its divisors is an integer number (37667565).

Almost surely, 2^1023442040 is an apocalyptic number.

1023442040 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1023442040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1205362080).

1023442040 is an abundant number, since it is smaller than the sum of its proper divisors (1387282120).

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

1023442040 is a wasteful number, since it uses less digits than its factorization.

1023442040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3672 (or 3668 counting only the distinct ones).

The product of its (nonzero) digits is 768, while the sum is 20.

The square root of 1023442040 is about 31991.2806870872. The cubic root of 1023442040 is about 1007.7537375020.

Adding to 1023442040 its reverse (402443201), we get a palindrome (1425885241).

The spelling of 1023442040 in words is "one billion, twenty-three million, four hundred forty-two thousand, forty".