1040351004 has 144 divisors (see below), whose sum is σ = 3451418880. Its totient is φ = 255985920.

The previous prime is 1040351003. The next prime is 1040351021. The reversal of 1040351004 is 4001530401.

It is a happy number.

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 (1040351003) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 42792 + ... + 62544.

Almost surely, 2^1040351004 is an apocalyptic number.

1040351004 is a gapful number since it is divisible by the number (14) 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 1040351004, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1725709440).

1040351004 is an abundant number, since it is smaller than the sum of its proper divisors (2411067876).

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

1040351004 is a wasteful number, since it uses less digits than its factorization.

1040351004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19800 (or 19795 counting only the distinct ones).

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

The square root of 1040351004 is about 32254.4726200879. The cubic root of 1040351004 is about 1013.2733727313.

Adding to 1040351004 its reverse (4001530401), we get a palindrome (5041881405).

The spelling of 1040351004 in words is "one billion, forty million, three hundred fifty-one thousand, four".