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34237920421 is a prime number
BaseRepresentation
bin11111111000101111…
…010011010010100101
310021101002200120021201
4133320233103102211
51030104401423141
623421221242501
72321306343655
oct377057232245
9107332616251
1034237920421
111357a460401
126776263431
1332c8389c13
14192b212365
15d55be9031
hex7f8bd34a5

34237920421 has 2 divisors, whose sum is σ = 34237920422. Its totient is φ = 34237920420.

The previous prime is 34237920419. The next prime is 34237920427. The reversal of 34237920421 is 12402973243.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 23038989796 + 11198930625 = 151786^2 + 105825^2 .

It is a cyclic number.

It is not a de Polignac number, because 34237920421 - 21 = 34237920419 is a prime.

Together with 34237920419, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34237920427) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17118960210 + 17118960211.

It is an arithmetic number, because the mean of its divisors is an integer number (17118960211).

Almost surely, 234237920421 is an apocalyptic number.

It is an amenable number.

34237920421 is a deficient number, since it is larger than the sum of its proper divisors (1).

34237920421 is an equidigital number, since it uses as much as digits as its factorization.

34237920421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 72576, while the sum is 37.

The spelling of 34237920421 in words is "thirty-four billion, two hundred thirty-seven million, nine hundred twenty thousand, four hundred twenty-one".