1420240415639 has 2 divisors, whose sum is σ = 1420240415640. Its totient is φ = 1420240415638.

The previous prime is 1420240415591. The next prime is 1420240415681. The reversal of 1420240415639 is 9365140420241.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1420240415639 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1420240415596 and 1420240415605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1420240412639) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 710120207819 + 710120207820.

It is an arithmetic number, because the mean of its divisors is an integer number (710120207820).

Almost surely, 2^{1420240415639} is an apocalyptic number.

1420240415639 is a deficient number, since it is larger than the sum of its proper divisors (1).

1420240415639 is an equidigital number, since it uses as much as digits as its factorization.

1420240415639 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 207360, while the sum is 41.

The spelling of 1420240415639 in words is "one trillion, four hundred twenty billion, two hundred forty million, four hundred fifteen thousand, six hundred thirty-nine".