420622101 has 6 divisors (see below), whose sum is σ = 607565270. Its totient is φ = 280414728.

The previous prime is 420622079. The next prime is 420622117. The reversal of 420622101 is 101226024.

420622101 is a `hidden beast` number, since 42 + 0 + 622 + 1 + 0 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 395612100 + 25010001 = 19890^2 + 5001^2 .

It is not a de Polignac number, because 420622101 - 2⁹ = 420621589 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420622801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 23367886 + ... + 23367903.

Almost surely, 2^420622101 is an apocalyptic number.

It is an amenable number.

420622101 is a deficient number, since it is larger than the sum of its proper divisors (186943169).

420622101 is a wasteful number, since it uses less digits than its factorization.

420622101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46735795 (or 46735792 counting only the distinct ones).

The product of its (nonzero) digits is 192, while the sum is 18.

The square root of 420622101 is about 20509.0736260807. The cubic root of 420622101 is about 749.2568051251.

Adding to 420622101 its reverse (101226024), we get a palindrome (521848125).

It can be divided in two parts, 420 and 622101, that added together give a square (622521 = 789²).

The spelling of 420622101 in words is "four hundred twenty million, six hundred twenty-two thousand, one hundred one".