42722587 has 2 divisors, whose sum is σ = 42722588. Its totient is φ = 42722586.

The previous prime is 42722573. The next prime is 42722591. The reversal of 42722587 is 78522724.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42722587 - 2¹¹ = 42720539 is a prime.

It is not a weakly prime, because it can be changed into another prime (42722527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21361293 + 21361294.

It is an arithmetic number, because the mean of its divisors is an integer number (21361294).

Almost surely, 2^42722587 is an apocalyptic number.

42722587 is a deficient number, since it is larger than the sum of its proper divisors (1).

42722587 is an equidigital number, since it uses as much as digits as its factorization.

42722587 is an evil number, because the sum of its binary digits is even.

The product of its digits is 62720, while the sum is 37.

The square root of 42722587 is about 6536.2517546374. The cubic root of 42722587 is about 349.5847783459.

It can be divided in two parts, 4272 and 2587, that added together give a cube (6859 = 19³).

The spelling of 42722587 in words is "forty-two million, seven hundred twenty-two thousand, five hundred eighty-seven".