467721421 has 2 divisors, whose sum is σ = 467721422. Its totient is φ = 467721420.

The previous prime is 467721413. The next prime is 467721427. The reversal of 467721421 is 124127764.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 293745321 + 173976100 = 17139^2 + 13190^2 .

It is a cyclic number.

It is not a de Polignac number, because 467721421 - 2³ = 467721413 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (467721427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 233860710 + 233860711.

It is an arithmetic number, because the mean of its divisors is an integer number (233860711).

Almost surely, 2^467721421 is an apocalyptic number.

It is an amenable number.

467721421 is a deficient number, since it is larger than the sum of its proper divisors (1).

467721421 is an equidigital number, since it uses as much as digits as its factorization.

467721421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18816, while the sum is 34.

The square root of 467721421 is about 21626.8680349236. The cubic root of 467721421 is about 776.2395265515.

The spelling of 467721421 in words is "four hundred sixty-seven million, seven hundred twenty-one thousand, four hundred twenty-one".