2040420220439 has 2 divisors, whose sum is σ = 2040420220440. Its totient is φ = 2040420220438.

The previous prime is 2040420220417. The next prime is 2040420220493. The reversal of 2040420220439 is 9340220240402.

Together with next prime (2040420220493) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2040420220439 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2040420220409) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1020210110219 + 1020210110220.

It is an arithmetic number, because the mean of its divisors is an integer number (1020210110220).

Almost surely, 2^{2040420220439} is an apocalyptic number.

2040420220439 is a deficient number, since it is larger than the sum of its proper divisors (1).

2040420220439 is an equidigital number, since it uses as much as digits as its factorization.

2040420220439 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27648, while the sum is 32.

The spelling of 2040420220439 in words is "two trillion, forty billion, four hundred twenty million, two hundred twenty thousand, four hundred thirty-nine".