420004177740 has 144 divisors (see below), whose sum is σ = 1457381190720. Its totient is φ = 95910842880.

The previous prime is 420004177727. The next prime is 420004177763. The reversal of 420004177740 is 47771400024.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 420004177695 and 420004177704.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1191030 + ... + 1502850.

Almost surely, 2^420004177740 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 420004177740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (728690595360).

420004177740 is an abundant number, since it is smaller than the sum of its proper divisors (1037377012980).

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

420004177740 is a wasteful number, since it uses less digits than its factorization.

420004177740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 312912 (or 312907 counting only the distinct ones).

The product of its (nonzero) digits is 43904, while the sum is 36.

Adding to 420004177740 its reverse (47771400024), we get a palindrome (467775577764).

The spelling of 420004177740 in words is "four hundred twenty billion, four million, one hundred seventy-seven thousand, seven hundred forty".