42212587 has 2 divisors, whose sum is σ = 42212588. Its totient is φ = 42212586.

The previous prime is 42212551. The next prime is 42212609. The reversal of 42212587 is 78521224.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42212587 - 2⁷ = 42212459 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (42212987) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21106293 + 21106294.

It is an arithmetic number, because the mean of its divisors is an integer number (21106294).

Almost surely, 2^42212587 is an apocalyptic number.

42212587 is a deficient number, since it is larger than the sum of its proper divisors (1).

42212587 is an equidigital number, since it uses as much as digits as its factorization.

42212587 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8960, while the sum is 31.

The square root of 42212587 is about 6497.1214395300. The cubic root of 42212587 is about 348.1881524264.

The spelling of 42212587 in words is "forty-two million, two hundred twelve thousand, five hundred eighty-seven".