420724521479 has 4 divisors (see below), whose sum is σ = 421317927720. Its totient is φ = 420131115240.

The previous prime is 420724521463. The next prime is 420724521493. The reversal of 420724521479 is 974125427024.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 420724521479 - 2⁴ = 420724521463 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420724521449) 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 3 ways as a sum of consecutive naturals, for example, 296702057 + ... + 296703474.

It is an arithmetic number, because the mean of its divisors is an integer number (105329481930).

Almost surely, 2^420724521479 is an apocalyptic number.

420724521479 is a deficient number, since it is larger than the sum of its proper divisors (593406241).

420724521479 is an equidigital number, since it uses as much as digits as its factorization.

420724521479 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593406240.

The product of its (nonzero) digits is 1128960, while the sum is 47.

The spelling of 420724521479 in words is "four hundred twenty billion, seven hundred twenty-four million, five hundred twenty-one thousand, four hundred seventy-nine".