42100530 has 16 divisors (see below), whose sum is σ = 101041344. Its totient is φ = 11226800.

The previous prime is 42100519. The next prime is 42100543. The reversal of 42100530 is 3500124.

It is a Harshad number since it is a multiple of its sum of digits (15).

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 7 ways as a sum of consecutive naturals, for example, 701646 + ... + 701705.

It is an arithmetic number, because the mean of its divisors is an integer number (6315084).

Almost surely, 2^42100530 is an apocalyptic number.

42100530 is an abundant number, since it is smaller than the sum of its proper divisors (58940814).

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

42100530 is a wasteful number, since it uses less digits than its factorization.

42100530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1403361.

The product of its (nonzero) digits is 120, while the sum is 15.

The square root of 42100530 is about 6488.4921206703. The cubic root of 42100530 is about 347.8797807756.

Adding to 42100530 its reverse (3500124), we get a palindrome (45600654).

The spelling of 42100530 in words is "forty-two million, one hundred thousand, five hundred thirty".