42770587 has 2 divisors, whose sum is σ = 42770588. Its totient is φ = 42770586.

The previous prime is 42770549. The next prime is 42770603. The reversal of 42770587 is 78507724.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42770587 - 2¹⁹ = 42246299 is a prime.

It is a super-2 number, since 2×42770587² = 3658646224649138, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (42770527) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21385293 + 21385294.

It is an arithmetic number, because the mean of its divisors is an integer number (21385294).

Almost surely, 2^42770587 is an apocalyptic number.

42770587 is a deficient number, since it is larger than the sum of its proper divisors (1).

42770587 is an equidigital number, since it uses as much as digits as its factorization.

42770587 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 109760, while the sum is 40.

The square root of 42770587 is about 6539.9225530583. The cubic root of 42770587 is about 349.7156520450.

The spelling of 42770587 in words is "forty-two million, seven hundred seventy thousand, five hundred eighty-seven".