420535215444 has 24 divisors (see below), whose sum is σ = 997880173920. Its totient is φ = 137802499744.

The previous prime is 420535215439. The next prime is 420535215449. The reversal of 420535215444 is 444512535024.

It is an interprime number because it is at equal distance from previous prime (420535215439) and next prime (420535215449).

It is a super-2 number, since 2×420535215444² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (420535215449) 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, 296987439 + ... + 296988854.

It is an arithmetic number, because the mean of its divisors is an integer number (41578340580).

Almost surely, 2^420535215444 is an apocalyptic number.

It is an amenable number.

420535215444 is an abundant number, since it is smaller than the sum of its proper divisors (577344958476).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

420535215444 is a wasteful number, since it uses less digits than its factorization.

420535215444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 593976359 (or 593976357 counting only the distinct ones).

The product of its (nonzero) digits is 384000, while the sum is 39.

The spelling of 420535215444 in words is "four hundred twenty billion, five hundred thirty-five million, two hundred fifteen thousand, four hundred forty-four".