420433401629 has 2 divisors, whose sum is σ = 420433401630. Its totient is φ = 420433401628.

The previous prime is 420433401547. The next prime is 420433401631. The reversal of 420433401629 is 926104334024.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 415805728900 + 4627672729 = 644830^2 + 68027^2 .

It is a cyclic number.

It is not a de Polignac number, because 420433401629 - 2¹² = 420433397533 is a prime.

Together with 420433401631, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 420433401592 and 420433401601.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420433401659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210216700814 + 210216700815.

It is an arithmetic number, because the mean of its divisors is an integer number (210216700815).

Almost surely, 2^420433401629 is an apocalyptic number.

It is an amenable number.

420433401629 is a deficient number, since it is larger than the sum of its proper divisors (1).

420433401629 is an equidigital number, since it uses as much as digits as its factorization.

420433401629 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 38.

The spelling of 420433401629 in words is "four hundred twenty billion, four hundred thirty-three million, four hundred one thousand, six hundred twenty-nine".