402430120420 has 48 divisors (see below), whose sum is σ = 863604404208. Its totient is φ = 157466050560.

The previous prime is 402430120381. The next prime is 402430120427. The reversal of 402430120420 is 24021034204.

It is a happy number.

It can be written as a sum of positive squares in 8 ways, for example, as 79831111936 + 322599008484 = 282544^2 + 567978^2 .

It is a junction number, because it is equal to n+sod(n) for n = 402430120391 and 402430120400.

It is not an unprimeable number, because it can be changed into a prime (402430120427) 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, 206061 + ... + 920500.

It is an arithmetic number, because the mean of its divisors is an integer number (17991758421).

Almost surely, 2^402430120420 is an apocalyptic number.

It is an amenable number.

402430120420 is an abundant number, since it is smaller than the sum of its proper divisors (461174283788).

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

402430120420 is a wasteful number, since it uses less digits than its factorization.

402430120420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1126960 (or 1126958 counting only the distinct ones).

The product of its (nonzero) digits is 1536, while the sum is 22.

Adding to 402430120420 its reverse (24021034204), we get a palindrome (426451154624).

The spelling of 402430120420 in words is "four hundred two billion, four hundred thirty million, one hundred twenty thousand, four hundred twenty".