420214547640 has 64 divisors (see below), whose sum is σ = 1279459244160. Its totient is φ = 110384714880.

The previous prime is 420214547633. The next prime is 420214547653. The reversal of 420214547640 is 46745412024.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26124706 + ... + 26140785.

It is an arithmetic number, because the mean of its divisors is an integer number (19991550690).

Almost surely, 2^420214547640 is an apocalyptic number.

420214547640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

420214547640 is an abundant number, since it is smaller than the sum of its proper divisors (859244696520).

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

420214547640 is a wasteful number, since it uses less digits than its factorization.

420214547640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52265572 (or 52265568 counting only the distinct ones).

The product of its (nonzero) digits is 215040, while the sum is 39.

Adding to 420214547640 its reverse (46745412024), we get a palindrome (466959959664).

The spelling of 420214547640 in words is "four hundred twenty billion, two hundred fourteen million, five hundred forty-seven thousand, six hundred forty".