42047107 has 2 divisors, whose sum is σ = 42047108. Its totient is φ = 42047106.

The previous prime is 42047087. The next prime is 42047111. The reversal of 42047107 is 70174024.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42047107 is a prime.

It is not a weakly prime, because it can be changed into another prime (42047147) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21023553 + 21023554.

It is an arithmetic number, because the mean of its divisors is an integer number (21023554).

Almost surely, 2^42047107 is an apocalyptic number.

42047107 is a deficient number, since it is larger than the sum of its proper divisors (1).

42047107 is an equidigital number, since it uses as much as digits as its factorization.

42047107 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1568, while the sum is 25.

The square root of 42047107 is about 6484.3740638554. The cubic root of 42047107 is about 347.7325724304.

It can be divided in two parts, 4204 and 7107, that added together give a palindrome (11311).

The spelling of 42047107 in words is "forty-two million, forty-seven thousand, one hundred seven".