402230302421 has 16 divisors (see below), whose sum is σ = 416183539968. Its totient is φ = 388493107200.

The previous prime is 402230302403. The next prime is 402230302451. The reversal of 402230302421 is 124203032204.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-402230302421 is a prime.

It is a super-2 number, since 2×402230302421² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (402230302451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1600436 + ... + 1834626.

It is an arithmetic number, because the mean of its divisors is an integer number (26011471248).

Almost surely, 2^402230302421 is an apocalyptic number.

402230302421 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

It is an amenable number.

402230302421 is a deficient number, since it is larger than the sum of its proper divisors (13953237547).

402230302421 is a wasteful number, since it uses less digits than its factorization.

402230302421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 234652.

The product of its (nonzero) digits is 2304, while the sum is 23.

Adding to 402230302421 its reverse (124203032204), we get a palindrome (526433334625).

The spelling of 402230302421 in words is "four hundred two billion, two hundred thirty million, three hundred two thousand, four hundred twenty-one".