420651107 has 4 divisors (see below), whose sum is σ = 420692976. Its totient is φ = 420609240.

The previous prime is 420651083. The next prime is 420651109. The reversal of 420651107 is 701156024.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 420651107 - 2⁸ = 420650851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420651109) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4178 + ... + 29304.

It is an arithmetic number, because the mean of its divisors is an integer number (105173244).

Almost surely, 2^420651107 is an apocalyptic number.

420651107 is a deficient number, since it is larger than the sum of its proper divisors (41869).

420651107 is a wasteful number, since it uses less digits than its factorization.

420651107 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41868.

The product of its (nonzero) digits is 1680, while the sum is 26.

The square root of 420651107 is about 20509.7807643085. The cubic root of 420651107 is about 749.2740275862.

The spelling of 420651107 in words is "four hundred twenty million, six hundred fifty-one thousand, one hundred seven".