420204749761 has 8 divisors (see below), whose sum is σ = 426674693664. Its totient is φ = 413740636320.

The previous prime is 420204749749. The next prime is 420204749791. The reversal of 420204749761 is 167947402024.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 420204749761 - 2²⁷ = 420070532033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (420204749711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1312255 + ... + 1600756.

It is an arithmetic number, because the mean of its divisors is an integer number (53334336708).

Almost surely, 2^420204749761 is an apocalyptic number.

It is an amenable number.

420204749761 is a deficient number, since it is larger than the sum of its proper divisors (6469943903).

420204749761 is a wasteful number, since it uses less digits than its factorization.

420204749761 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2915231.

The product of its (nonzero) digits is 677376, while the sum is 46.

The spelling of 420204749761 in words is "four hundred twenty billion, two hundred four million, seven hundred forty-nine thousand, seven hundred sixty-one".