42661207 has 2 divisors, whose sum is σ = 42661208. Its totient is φ = 42661206.

The previous prime is 42661163. The next prime is 42661243. The reversal of 42661207 is 70216624.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 42661207 - 2⁷ = 42661079 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42661247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21330603 + 21330604.

It is an arithmetic number, because the mean of its divisors is an integer number (21330604).

Almost surely, 2^42661207 is an apocalyptic number.

42661207 is a deficient number, since it is larger than the sum of its proper divisors (1).

42661207 is an equidigital number, since it uses as much as digits as its factorization.

42661207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 28.

The square root of 42661207 is about 6531.5547153798. The cubic root of 42661207 is about 349.4172807020.

The spelling of 42661207 in words is "forty-two million, six hundred sixty-one thousand, two hundred seven".