420421031240 has 64 divisors (see below), whose sum is σ = 1088242248960. Its totient is φ = 143189740800.

The previous prime is 420421031221. The next prime is 420421031273. The reversal of 420421031240 is 42130124024.

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, 4929587 + ... + 5014146.

It is an arithmetic number, because the mean of its divisors is an integer number (17003785140).

Almost surely, 2^420421031240 is an apocalyptic number.

420421031240 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

420421031240 is an abundant number, since it is smaller than the sum of its proper divisors (667821217720).

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

420421031240 is a wasteful number, since it uses less digits than its factorization.

420421031240 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9943902 (or 9943898 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 23.

Adding to 420421031240 its reverse (42130124024), we get a palindrome (462551155264).

The spelling of 420421031240 in words is "four hundred twenty billion, four hundred twenty-one million, thirty-one thousand, two hundred forty".