420627340644 has 48 divisors (see below), whose sum is σ = 1122173488128. Its totient is φ = 120125606688.

The previous prime is 420627340619. The next prime is 420627340649. The reversal of 420627340644 is 446043726024.

It is a super-2 number, since 2×420627340644² (a number of 24 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a junction number, because it is equal to n+sod(n) for n = 420627340596 and 420627340605.

It is not an unprimeable number, because it can be changed into a prime (420627340649) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 927832 + ... + 1304655.

It is an arithmetic number, because the mean of its divisors is an integer number (23378614336).

Almost surely, 2^420627340644 is an apocalyptic number.

It is an amenable number.

420627340644 is an abundant number, since it is smaller than the sum of its proper divisors (701546147484).

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

420627340644 is a wasteful number, since it uses less digits than its factorization.

420627340644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2234744 (or 2234742 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 42.

The spelling of 420627340644 in words is "four hundred twenty billion, six hundred twenty-seven million, three hundred forty thousand, six hundred forty-four".