42857653 has 2 divisors, whose sum is σ = 42857654. Its totient is φ = 42857652.

The previous prime is 42857651. The next prime is 42857657. The reversal of 42857653 is 35675824.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 24039409 + 18818244 = 4903^2 + 4338^2 .

It is a cyclic number.

It is not a de Polignac number, because 42857653 - 2¹ = 42857651 is a prime.

Together with 42857651, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42857651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21428826 + 21428827.

It is an arithmetic number, because the mean of its divisors is an integer number (21428827).

Almost surely, 2^42857653 is an apocalyptic number.

It is an amenable number.

42857653 is a deficient number, since it is larger than the sum of its proper divisors (1).

42857653 is an equidigital number, since it uses as much as digits as its factorization.

42857653 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 201600, while the sum is 40.

The square root of 42857653 is about 6546.5756697681. The cubic root of 42857653 is about 349.9527909115.

It can be divided in two parts, 428 and 57653, that added together give a square (58081 = 241²).

The spelling of 42857653 in words is "forty-two million, eight hundred fifty-seven thousand, six hundred fifty-three".