1030440042 has 64 divisors (see below), whose sum is σ = 2345068800. Its totient is φ = 339492384.

The previous prime is 1030440029. The next prime is 1030440083. The reversal of 1030440042 is 2400440301.

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 = 1030439997 and 1030440024.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 387963 + ... + 390609.

It is an arithmetic number, because the mean of its divisors is an integer number (36641700).

Almost surely, 2^1030440042 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1030440042, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1172534400).

1030440042 is an abundant number, since it is smaller than the sum of its proper divisors (1314628758).

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

1030440042 is an frugal number, since it uses more digits than its factorization.

1030440042 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2759 (or 2741 counting only the distinct ones).

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

The square root of 1030440042 is about 32100.4679405145. The cubic root of 1030440042 is about 1010.0454320641.

Adding to 1030440042 its reverse (2400440301), we get a palindrome (3430880343).

The spelling of 1030440042 in words is "one billion, thirty million, four hundred forty thousand, forty-two".