1021040104 has 64 divisors (see below), whose sum is σ = 2310819840. Its totient is φ = 413476800.

The previous prime is 1021040101. The next prime is 1021040131. The reversal of 1021040104 is 4010401201.

It is not an unprimeable number, because it can be changed into a prime (1021040101) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 102129 + ... + 111679.

It is an arithmetic number, because the mean of its divisors is an integer number (36106560).

Almost surely, 2^1021040104 is an apocalyptic number.

1021040104 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 1021040104, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1155409920).

1021040104 is an abundant number, since it is smaller than the sum of its proper divisors (1289779736).

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

1021040104 is a wasteful number, since it uses less digits than its factorization.

1021040104 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9670 (or 9666 counting only the distinct ones).

The product of its (nonzero) digits is 32, while the sum is 13.

The square root of 1021040104 is about 31953.7181561082. The cubic root of 1021040104 is about 1006.9647476752.

Adding to 1021040104 its reverse (4010401201), we get a palindrome (5031441305).

The spelling of 1021040104 in words is "one billion, twenty-one million, forty thousand, one hundred four".