42620537 has 2 divisors, whose sum is σ = 42620538. Its totient is φ = 42620536.

The previous prime is 42620531. The next prime is 42620551. The reversal of 42620537 is 73502624.

42620537 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33686416 + 8934121 = 5804^2 + 2989^2 .

It is a cyclic number.

It is not a de Polignac number, because 42620537 - 2¹⁶ = 42555001 is a prime.

It is not a weakly prime, because it can be changed into another prime (42620531) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21310268 + 21310269.

It is an arithmetic number, because the mean of its divisors is an integer number (21310269).

Almost surely, 2^42620537 is an apocalyptic number.

It is an amenable number.

42620537 is a deficient number, since it is larger than the sum of its proper divisors (1).

42620537 is an equidigital number, since it uses as much as digits as its factorization.

42620537 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 29.

The square root of 42620537 is about 6528.4406254480. The cubic root of 42620537 is about 349.3062093093.

The spelling of 42620537 in words is "forty-two million, six hundred twenty thousand, five hundred thirty-seven".