420442007 has 2 divisors, whose sum is σ = 420442008. Its totient is φ = 420442006.

The previous prime is 420441991. The next prime is 420442027. The reversal of 420442007 is 700244024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 420442007 - 2⁴ = 420441991 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420442027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210221003 + 210221004.

It is an arithmetic number, because the mean of its divisors is an integer number (210221004).

Almost surely, 2^420442007 is an apocalyptic number.

420442007 is a deficient number, since it is larger than the sum of its proper divisors (1).

420442007 is an equidigital number, since it uses as much as digits as its factorization.

420442007 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1792, while the sum is 23.

The square root of 420442007 is about 20504.6825627709. The cubic root of 420442007 is about 749.1498556666.

The spelling of 420442007 in words is "four hundred twenty million, four hundred forty-two thousand, seven".