1206420245893 has 2 divisors, whose sum is σ = 1206420245894. Its totient is φ = 1206420245892.

The previous prime is 1206420245873. The next prime is 1206420245903. The reversal of 1206420245893 is 3985420246021.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1076516227809 + 129904018084 = 1037553^2 + 360422^2 .

It is a cyclic number.

It is not a de Polignac number, because 1206420245893 - 2²⁹ = 1205883374981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1206420245803) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 603210122946 + 603210122947.

It is an arithmetic number, because the mean of its divisors is an integer number (603210122947).

Almost surely, 2^{1206420245893} is an apocalyptic number.

It is an amenable number.

1206420245893 is a deficient number, since it is larger than the sum of its proper divisors (1).

1206420245893 is an equidigital number, since it uses as much as digits as its factorization.

1206420245893 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 829440, while the sum is 46.

The spelling of 1206420245893 in words is "one trillion, two hundred six billion, four hundred twenty million, two hundred forty-five thousand, eight hundred ninety-three".