106420420505 has 16 divisors (see below), whose sum is σ = 145980307200. Its totient is φ = 72957851712.

The previous prime is 106420420501. The next prime is 106420420507. The reversal of 106420420505 is 505024024601.

It is a cyclic number.

It is not a de Polignac number, because 106420420505 - 2² = 106420420501 is a prime.

It is a super-2 number, since 2×106420420505² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (106420420501) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 174989 + ... + 493418.

It is an arithmetic number, because the mean of its divisors is an integer number (9123769200).

Almost surely, 2^106420420505 is an apocalyptic number.

It is an amenable number.

106420420505 is a deficient number, since it is larger than the sum of its proper divisors (39559886695).

106420420505 is an equidigital number, since it uses as much as digits as its factorization.

106420420505 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 672968.

The product of its (nonzero) digits is 9600, while the sum is 29.

The spelling of 106420420505 in words is "one hundred six billion, four hundred twenty million, four hundred twenty thousand, five hundred five".