42115443 has 16 divisors (see below), whose sum is σ = 60582816. Its totient is φ = 25925120.

The previous prime is 42115441. The next prime is 42115459. The reversal of 42115443 is 34451124.

It is a cyclic number.

It is not a de Polignac number, because 42115443 - 2¹ = 42115441 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42115441) by changing a digit.

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 15 ways as a sum of consecutive naturals, for example, 5088 + ... + 10493.

It is an arithmetic number, because the mean of its divisors is an integer number (3786426).

Almost surely, 2^42115443 is an apocalyptic number.

42115443 is a deficient number, since it is larger than the sum of its proper divisors (18467373).

42115443 is a wasteful number, since it uses less digits than its factorization.

42115443 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15654.

The product of its digits is 1920, while the sum is 24.

The square root of 42115443 is about 6489.6412073396. The cubic root of 42115443 is about 347.9208516658.

Adding to 42115443 its reverse (34451124), we get a palindrome (76566567).

The spelling of 42115443 in words is "forty-two million, one hundred fifteen thousand, four hundred forty-three".