442861007 has 2 divisors, whose sum is σ = 442861008. Its totient is φ = 442861006.

The previous prime is 442860991. The next prime is 442861061. The reversal of 442861007 is 700168244.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 442861007 - 2⁴ = 442860991 is a prime.

It is a super-2 number, since 2×442861007² = 392251743042108098, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (442861607) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 221430503 + 221430504.

It is an arithmetic number, because the mean of its divisors is an integer number (221430504).

Almost surely, 2^442861007 is an apocalyptic number.

442861007 is a deficient number, since it is larger than the sum of its proper divisors (1).

442861007 is an equidigital number, since it uses as much as digits as its factorization.

442861007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10752, while the sum is 32.

The square root of 442861007 is about 21044.2630424541. The cubic root of 442861007 is about 762.2354582439.

The spelling of 442861007 in words is "four hundred forty-two million, eight hundred sixty-one thousand, seven".