420940337501 has 2 divisors, whose sum is σ = 420940337502. Its totient is φ = 420940337500.

The previous prime is 420940337497. The next prime is 420940337509. The reversal of 420940337501 is 105733049024.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 364616707225 + 56323630276 = 603835^2 + 237326^2 .

It is a cyclic number.

It is not a de Polignac number, because 420940337501 - 2² = 420940337497 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (420940337509) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 210470168750 + 210470168751.

It is an arithmetic number, because the mean of its divisors is an integer number (210470168751).

Almost surely, 2^420940337501 is an apocalyptic number.

It is an amenable number.

420940337501 is a deficient number, since it is larger than the sum of its proper divisors (1).

420940337501 is an equidigital number, since it uses as much as digits as its factorization.

420940337501 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 38.

The spelling of 420940337501 in words is "four hundred twenty billion, nine hundred forty million, three hundred thirty-seven thousand, five hundred one".