1042100 has 36 divisors (see below), whose sum is σ = 2398284. Its totient is φ = 391680.

The previous prime is 1042099. The next prime is 1042103. The reversal of 1042100 is 12401.

It can be written as a sum of positive squares in 6 ways, for example, as 128164 + 913936 = 358^2 + 956^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1042103) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1394 + ... + 2006.

It is an arithmetic number, because the mean of its divisors is an integer number (66619).

2^1042100 is an apocalyptic number.

1042100 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 1042100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1199142).

1042100 is an abundant number, since it is smaller than the sum of its proper divisors (1356184).

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

1042100 is a wasteful number, since it uses less digits than its factorization.

1042100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 644 (or 637 counting only the distinct ones).

The product of its (nonzero) digits is 8, while the sum is 8.

The square root of 1042100 is about 1020.8329931972. The cubic root of 1042100 is about 101.3840879554.

Adding to 1042100 its reverse (12401), we get a palindrome (1054501).

The spelling of 1042100 in words is "one million, forty-two thousand, one hundred".