402430120381 has 2 divisors, whose sum is σ = 402430120382. Its totient is φ = 402430120380.

The previous prime is 402430120373. The next prime is 402430120427. The reversal of 402430120381 is 183021034204.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 374452205625 + 27977914756 = 611925^2 + 167266^2 .

It is a cyclic number.

It is not a de Polignac number, because 402430120381 - 2³ = 402430120373 is a prime.

It is a super-2 number, since 2×402430120381² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (402430120321) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 201215060190 + 201215060191.

It is an arithmetic number, because the mean of its divisors is an integer number (201215060191).

Almost surely, 2^402430120381 is an apocalyptic number.

It is an amenable number.

402430120381 is a deficient number, since it is larger than the sum of its proper divisors (1).

402430120381 is an equidigital number, since it uses as much as digits as its factorization.

402430120381 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4608, while the sum is 28.

Adding to 402430120381 its reverse (183021034204), we get a palindrome (585451154585).

The spelling of 402430120381 in words is "four hundred two billion, four hundred thirty million, one hundred twenty thousand, three hundred eighty-one".