1023042040 has 64 divisors (see below), whose sum is σ = 2352045600. Its totient is φ = 400338432.

The previous prime is 1023042037. The next prime is 1023042043. The reversal of 1023042040 is 402403201.

It is an interprime number because it is at equal distance from previous prime (1023042037) and next prime (1023042043).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1023042043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1383991 + ... + 1384729.

Almost surely, 2^1023042040 is an apocalyptic number.

1023042040 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 1023042040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1176022800).

1023042040 is an abundant number, since it is smaller than the sum of its proper divisors (1329003560).

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

1023042040 is a wasteful number, since it uses less digits than its factorization.

1023042040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1456 (or 1452 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 16.

The square root of 1023042040 is about 31985.0283726621. The cubic root of 1023042040 is about 1007.6224309221.

Adding to 1023042040 its reverse (402403201), we get a palindrome (1425445241).

The spelling of 1023042040 in words is "one billion, twenty-three million, forty-two thousand, forty".