42100034 has 4 divisors (see below), whose sum is σ = 63150054. Its totient is φ = 21050016.

The previous prime is 42100033. The next prime is 42100039. The reversal of 42100034 is 43000124.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 27300625 + 14799409 = 5225^2 + 3847^2 .

It is a junction number, because it is equal to n+sod(n) for n = 42099991 and 42100018.

It is not an unprimeable number, because it can be changed into a prime (42100031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10525007 + ... + 10525010.

Almost surely, 2^42100034 is an apocalyptic number.

42100034 is a deficient number, since it is larger than the sum of its proper divisors (21050020).

42100034 is a wasteful number, since it uses less digits than its factorization.

42100034 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21050019.

The product of its (nonzero) digits is 96, while the sum is 14.

The square root of 42100034 is about 6488.4538990425. The cubic root of 42100034 is about 347.8784146088.

Adding to 42100034 its reverse (43000124), we get a palindrome (85100158).

The spelling of 42100034 in words is "forty-two million, one hundred thousand, thirty-four".