42115534 has 4 divisors (see below), whose sum is σ = 63173304. Its totient is φ = 21057766.

The previous prime is 42115523. The next prime is 42115543. The reversal of 42115534 is 43551124.

It is a happy number.

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

It is a junction number, because it is equal to n+sod(n) for n = 42115499 and 42115508.

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 as a sum of consecutive naturals, namely, 10528882 + ... + 10528885.

It is an arithmetic number, because the mean of its divisors is an integer number (15793326).

Almost surely, 2^42115534 is an apocalyptic number.

42115534 is a deficient number, since it is larger than the sum of its proper divisors (21057770).

42115534 is a wasteful number, since it uses less digits than its factorization.

42115534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21057769.

The product of its digits is 2400, while the sum is 25.

The square root of 42115534 is about 6489.6482185092. The cubic root of 42115534 is about 347.9211022530.

Adding to 42115534 its reverse (43551124), we get a palindrome (85666658).

The spelling of 42115534 in words is "forty-two million, one hundred fifteen thousand, five hundred thirty-four".