42826517 has 2 divisors, whose sum is σ = 42826518. Its totient is φ = 42826516.

The previous prime is 42826499. The next prime is 42826523. The reversal of 42826517 is 71562824.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 42172036 + 654481 = 6494^2 + 809^2 .

It is a cyclic number.

It is not a de Polignac number, because 42826517 - 2⁸ = 42826261 is a prime.

It is a super-2 number, since 2×42826517² = 3668221116702578, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42826547) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21413258 + 21413259.

It is an arithmetic number, because the mean of its divisors is an integer number (21413259).

Almost surely, 2^42826517 is an apocalyptic number.

It is an amenable number.

42826517 is a deficient number, since it is larger than the sum of its proper divisors (1).

42826517 is an equidigital number, since it uses as much as digits as its factorization.

42826517 is an evil number, because the sum of its binary digits is even.

The product of its digits is 26880, while the sum is 35.

The square root of 42826517 is about 6544.1972005740. The cubic root of 42826517 is about 349.8680237107.

The spelling of 42826517 in words is "forty-two million, eight hundred twenty-six thousand, five hundred seventeen".