420012401381 has 2 divisors, whose sum is σ = 420012401382. Its totient is φ = 420012401380.

The previous prime is 420012401353. The next prime is 420012401447. The reversal of 420012401381 is 183104210024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 372180524356 + 47831877025 = 610066^2 + 218705^2 .

It is a cyclic number.

It is not a de Polignac number, because 420012401381 - 2²² = 420008207077 is a prime.

It is a super-2 number, since 2×420012401381² (a number of 24 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 420012401381.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420012401881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210006200690 + 210006200691.

It is an arithmetic number, because the mean of its divisors is an integer number (210006200691).

Almost surely, 2^420012401381 is an apocalyptic number.

It is an amenable number.

420012401381 is a deficient number, since it is larger than the sum of its proper divisors (1).

420012401381 is an equidigital number, since it uses as much as digits as its factorization.

420012401381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1536, while the sum is 26.

The spelling of 420012401381 in words is "four hundred twenty billion, twelve million, four hundred one thousand, three hundred eighty-one".