42604129 has 2 divisors, whose sum is σ = 42604130. Its totient is φ = 42604128.

The previous prime is 42604127. The next prime is 42604141. The reversal of 42604129 is 92140624.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 26419600 + 16184529 = 5140^2 + 4023^2 .

It is a cyclic number.

It is not a de Polignac number, because 42604129 - 2¹ = 42604127 is a prime.

It is a super-2 number, since 2×42604129² = 3630223615697282, which contains 22 as substring.

Together with 42604127, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 42604097 and 42604106.

It is not a weakly prime, because it can be changed into another prime (42604127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21302064 + 21302065.

It is an arithmetic number, because the mean of its divisors is an integer number (21302065).

Almost surely, 2^42604129 is an apocalyptic number.

It is an amenable number.

42604129 is a deficient number, since it is larger than the sum of its proper divisors (1).

42604129 is an equidigital number, since it uses as much as digits as its factorization.

42604129 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 28.

The square root of 42604129 is about 6527.1838491037. The cubic root of 42604129 is about 349.2613784027.

The spelling of 42604129 in words is "forty-two million, six hundred four thousand, one hundred twenty-nine".