42851129 has 2 divisors, whose sum is σ = 42851130. Its totient is φ = 42851128.

The previous prime is 42851119. The next prime is 42851131. The reversal of 42851129 is 92115824.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 33085504 + 9765625 = 5752^2 + 3125^2 .

It is a cyclic number.

It is not a de Polignac number, because 42851129 - 2²⁴ = 26073913 is a prime.

Together with 42851131, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 42851095 and 42851104.

It is not a weakly prime, because it can be changed into another prime (42851119) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21425564 + 21425565.

It is an arithmetic number, because the mean of its divisors is an integer number (21425565).

Almost surely, 2^42851129 is an apocalyptic number.

It is an amenable number.

42851129 is a deficient number, since it is larger than the sum of its proper divisors (1).

42851129 is an equidigital number, since it uses as much as digits as its factorization.

42851129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5760, while the sum is 32.

The square root of 42851129 is about 6546.0773750392. The cubic root of 42851129 is about 349.9350328395.

The spelling of 42851129 in words is "forty-two million, eight hundred fifty-one thousand, one hundred twenty-nine".