42286117 has 2 divisors, whose sum is σ = 42286118. Its totient is φ = 42286116.

The previous prime is 42286099. The next prime is 42286133. The reversal of 42286117 is 71168224.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 40972801 + 1313316 = 6401^2 + 1146^2 .

It is a cyclic number.

It is not a de Polignac number, because 42286117 - 2²³ = 33897509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42286177) 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, 21143058 + 21143059.

It is an arithmetic number, because the mean of its divisors is an integer number (21143059).

Almost surely, 2^42286117 is an apocalyptic number.

It is an amenable number.

42286117 is a deficient number, since it is larger than the sum of its proper divisors (1).

42286117 is an equidigital number, since it uses as much as digits as its factorization.

42286117 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5376, while the sum is 31.

The square root of 42286117 is about 6502.7776372870. Note that the first 3 decimals coincide. The cubic root of 42286117 is about 348.3902045118.

The spelling of 42286117 in words is "forty-two million, two hundred eighty-six thousand, one hundred seventeen".