620201421 has 32 divisors (see below), whose sum is σ = 1051249920. Its totient is φ = 354004992.

The previous prime is 620201411. The next prime is 620201423. The reversal of 620201421 is 124102026.

620201421 is a `hidden beast` number, since 620 + 2 + 0 + 1 + 42 + 1 = 666.

It is not a de Polignac number, because 620201421 - 2⁹ = 620200909 is a prime.

It is a super-2 number, since 2×620201421² = 769299605220838482, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 620201394 and 620201403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (620201423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 292461 + ... + 294573.

It is an arithmetic number, because the mean of its divisors is an integer number (32851560).

Almost surely, 2^620201421 is an apocalyptic number.

It is an amenable number.

620201421 is a deficient number, since it is larger than the sum of its proper divisors (431048499).

620201421 is a wasteful number, since it uses less digits than its factorization.

620201421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3682 (or 3676 counting only the distinct ones).

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

The square root of 620201421 is about 24903.8434985446. The cubic root of 620201421 is about 852.7942281525.

Adding to 620201421 its reverse (124102026), we get a palindrome (744303447).

The spelling of 620201421 in words is "six hundred twenty million, two hundred one thousand, four hundred twenty-one".