42685658629 has 2 divisors, whose sum is σ = 42685658630. Its totient is φ = 42685658628.

The previous prime is 42685658621. The next prime is 42685658657. The reversal of 42685658629 is 92685658624.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38818062529 + 3867596100 = 197023^2 + 62190^2 .

It is a cyclic number.

It is not a de Polignac number, because 42685658629 - 2³ = 42685658621 is a prime.

It is a super-3 number, since 3×42685658629³ (a number of 33 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42685658621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21342829314 + 21342829315.

It is an arithmetic number, because the mean of its divisors is an integer number (21342829315).

Almost surely, 2^42685658629 is an apocalyptic number.

It is an amenable number.

42685658629 is a deficient number, since it is larger than the sum of its proper divisors (1).

42685658629 is an equidigital number, since it uses as much as digits as its factorization.

42685658629 is an evil number, because the sum of its binary digits is even.

The product of its digits is 49766400, while the sum is 61.

The spelling of 42685658629 in words is "forty-two billion, six hundred eighty-five million, six hundred fifty-eight thousand, six hundred twenty-nine".