420324402740 has 96 divisors (see below), whose sum is σ = 983747842560. Its totient is φ = 149574297600.

The previous prime is 420324402733. The next prime is 420324402761. The reversal of 420324402740 is 47204423024.

It is a junction number, because it is equal to n+sod(n) for n = 420324402697 and 420324402706.

It is a congruent number.

It is an unprimeable number.

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 31 ways as a sum of consecutive naturals, for example, 1856930 + ... + 2070950.

It is an arithmetic number, because the mean of its divisors is an integer number (10247373360).

Almost surely, 2^420324402740 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 420324402740, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (491873921280).

420324402740 is an abundant number, since it is smaller than the sum of its proper divisors (563423439820).

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

420324402740 is a wasteful number, since it uses less digits than its factorization.

420324402740 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214233 (or 214231 counting only the distinct ones).

The product of its (nonzero) digits is 43008, while the sum is 32.

Adding to 420324402740 its reverse (47204423024), we get a palindrome (467528825764).

The spelling of 420324402740 in words is "four hundred twenty billion, three hundred twenty-four million, four hundred two thousand, seven hundred forty".