4021426154839 has 2 divisors, whose sum is σ = 4021426154840. Its totient is φ = 4021426154838.

The previous prime is 4021426154833. The next prime is 4021426154939. The reversal of 4021426154839 is 9384516241204.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4021426154839 - 2²⁹ = 4020889283927 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 4021426154792 and 4021426154801.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4021426154833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2010713077419 + 2010713077420.

It is an arithmetic number, because the mean of its divisors is an integer number (2010713077420).

Almost surely, 2^{4021426154839} is an apocalyptic number.

4021426154839 is a deficient number, since it is larger than the sum of its proper divisors (1).

4021426154839 is an equidigital number, since it uses as much as digits as its factorization.

4021426154839 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1658880, while the sum is 49.

The spelling of 4021426154839 in words is "four trillion, twenty-one billion, four hundred twenty-six million, one hundred fifty-four thousand, eight hundred thirty-nine".