62420021 has 2 divisors, whose sum is σ = 62420022. Its totient is φ = 62420020.

The previous prime is 62420009. The next prime is 62420027. The reversal of 62420021 is 12002426.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 45495025 + 16924996 = 6745^2 + 4114^2 .

It is a cyclic number.

It is not a de Polignac number, because 62420021 - 2¹⁰ = 62418997 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (62420027) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31210010 + 31210011.

It is an arithmetic number, because the mean of its divisors is an integer number (31210011).

Almost surely, 2^62420021 is an apocalyptic number.

It is an amenable number.

62420021 is a deficient number, since it is larger than the sum of its proper divisors (1).

62420021 is an equidigital number, since it uses as much as digits as its factorization.

62420021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 62420021 is about 7900.6342150488. The cubic root of 62420021 is about 396.6809124026.

Adding to 62420021 its reverse (12002426), we get a palindrome (74422447).

The spelling of 62420021 in words is "sixty-two million, four hundred twenty thousand, twenty-one".