420616101 has 4 divisors (see below), whose sum is σ = 560821472. Its totient is φ = 280410732.

The previous prime is 420616043. The next prime is 420616117. The reversal of 420616101 is 101616024.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 420616101 - 2⁹ = 420615589 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 (420616501) 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 3 ways as a sum of consecutive naturals, for example, 70102681 + ... + 70102686.

It is an arithmetic number, because the mean of its divisors is an integer number (140205368).

Almost surely, 2^420616101 is an apocalyptic number.

It is an amenable number.

420616101 is a deficient number, since it is larger than the sum of its proper divisors (140205371).

420616101 is a wasteful number, since it uses less digits than its factorization.

420616101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140205370.

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 420616101 is about 20508.9273488401. The cubic root of 420616101 is about 749.2532424955.

The spelling of 420616101 in words is "four hundred twenty million, six hundred sixteen thousand, one hundred one".