420131978352139 has 2 divisors, whose sum is σ = 420131978352140. Its totient is φ = 420131978352138.

The previous prime is 420131978352133. The next prime is 420131978352169. The reversal of 420131978352139 is 931253879131024.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 420131978352139 - 2⁷ = 420131978352011 is a prime.

It is not a weakly prime, because it can be changed into another prime (420131978352133) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210065989176069 + 210065989176070.

It is an arithmetic number, because the mean of its divisors is an integer number (210065989176070).

Almost surely, 2^{420131978352139} is an apocalyptic number.

420131978352139 is a deficient number, since it is larger than the sum of its proper divisors (1).

420131978352139 is an equidigital number, since it uses as much as digits as its factorization.

420131978352139 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9797760, while the sum is 58.

The spelling of 420131978352139 in words is "four hundred twenty trillion, one hundred thirty-one billion, nine hundred seventy-eight million, three hundred fifty-two thousand, one hundred thirty-nine".