62128147421 has 2 divisors, whose sum is σ = 62128147422. Its totient is φ = 62128147420.

The previous prime is 62128147409. The next prime is 62128147427. The reversal of 62128147421 is 12474182126.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57020186521 + 5107960900 = 238789^2 + 71470^2 .

It is a cyclic number.

It is not a de Polignac number, because 62128147421 - 2¹⁰ = 62128146397 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (62128147427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 31064073710 + 31064073711.

It is an arithmetic number, because the mean of its divisors is an integer number (31064073711).

Almost surely, 2^62128147421 is an apocalyptic number.

It is an amenable number.

62128147421 is a deficient number, since it is larger than the sum of its proper divisors (1).

62128147421 is an equidigital number, since it uses as much as digits as its factorization.

62128147421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43008, while the sum is 38.

The spelling of 62128147421 in words is "sixty-two billion, one hundred twenty-eight million, one hundred forty-seven thousand, four hundred twenty-one".