402420100004421 has 16 divisors (see below), whose sum is σ = 553045854656064. Its totient is φ = 260128287345024.

The previous prime is 402420100004371. The next prime is 402420100004509. The reversal of 402420100004421 is 124400001024204.

It is not a de Polignac number, because 402420100004421 - 2²⁷ = 402419965786693 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 402420100004391 and 402420100004400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402420100004821) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 11385148966 + ... + 11385184311.

It is an arithmetic number, because the mean of its divisors is an integer number (34565365916004).

Almost surely, 2^{402420100004421} is an apocalyptic number.

It is an amenable number.

402420100004421 is a deficient number, since it is larger than the sum of its proper divisors (150625754651643).

402420100004421 is a wasteful number, since it uses less digits than its factorization.

402420100004421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22770333460.

The product of its (nonzero) digits is 2048, while the sum is 24.

Adding to 402420100004421 its reverse (124400001024204), we get a palindrome (526820101028625).

The spelling of 402420100004421 in words is "four hundred two trillion, four hundred twenty billion, one hundred million, four thousand, four hundred twenty-one".