13420142381 has 2 divisors, whose sum is σ = 13420142382. Its totient is φ = 13420142380.

The previous prime is 13420142371. The next prime is 13420142443. The reversal of 13420142381 is 18324102431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 11764873156 + 1655269225 = 108466^2 + 40685^2 .

It is a cyclic number.

It is not a de Polignac number, because 13420142381 - 2⁶ = 13420142317 is a prime.

It is a super-2 number, since 2×13420142381² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (13420142311) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6710071190 + 6710071191.

It is an arithmetic number, because the mean of its divisors is an integer number (6710071191).

Almost surely, 2^13420142381 is an apocalyptic number.

It is an amenable number.

13420142381 is a deficient number, since it is larger than the sum of its proper divisors (1).

13420142381 is an equidigital number, since it uses as much as digits as its factorization.

13420142381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 29.

The spelling of 13420142381 in words is "thirteen billion, four hundred twenty million, one hundred forty-two thousand, three hundred eighty-one".