42103100 has 72 divisors (see below), whose sum is σ = 99524880. Its totient is φ = 15367680.

The previous prime is 42103093. The next prime is 42103123. The reversal of 42103100 is 130124.

It is a happy number.

It is a super-2 number, since 2×42103100² = 3545342059220000, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 180584 + ... + 180816.

It is an arithmetic number, because the mean of its divisors is an integer number (1382290).

Almost surely, 2^42103100 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 42103100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (49762440).

42103100 is an abundant number, since it is smaller than the sum of its proper divisors (57421780).

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

42103100 is a wasteful number, since it uses less digits than its factorization.

42103100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 399 (or 392 counting only the distinct ones).

The product of its (nonzero) digits is 24, while the sum is 11.

The square root of 42103100 is about 6488.6901605794. The cubic root of 42103100 is about 347.8868593314.

Adding to 42103100 its reverse (130124), we get a palindrome (42233224).

The spelling of 42103100 in words is "forty-two million, one hundred three thousand, one hundred".