42248929 has 2 divisors, whose sum is σ = 42248930. Its totient is φ = 42248928.

The previous prime is 42248917. The next prime is 42248971. The reversal of 42248929 is 92984224.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24482704 + 17766225 = 4948^2 + 4215^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42248929 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42248891 and 42248900.

It is not a weakly prime, because it can be changed into another prime (42248329) 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 as a sum of consecutive naturals, namely, 21124464 + 21124465.

It is an arithmetic number, because the mean of its divisors is an integer number (21124465).

Almost surely, 2^42248929 is an apocalyptic number.

It is an amenable number.

42248929 is a deficient number, since it is larger than the sum of its proper divisors (1).

42248929 is an equidigital number, since it uses as much as digits as its factorization.

42248929 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 82944, while the sum is 40.

The square root of 42248929 is about 6499.9176148625. The cubic root of 42248929 is about 348.2880454135.

The spelling of 42248929 in words is "forty-two million, two hundred forty-eight thousand, nine hundred twenty-nine".