149334456421 has 2 divisors, whose sum is σ = 149334456422. Its totient is φ = 149334456420.

The previous prime is 149334456239. The next prime is 149334456443. The reversal of 149334456421 is 124654433941.

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., 137612063521 + 11722392900 = 370961^2 + 108270^2 .

It is an emirp because it is prime and its reverse (124654433941) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 149334456421 - 2²⁹ = 148797585509 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (149334456121) 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, 74667228210 + 74667228211.

It is an arithmetic number, because the mean of its divisors is an integer number (74667228211).

Almost surely, 2^149334456421 is an apocalyptic number.

It is an amenable number.

149334456421 is a deficient number, since it is larger than the sum of its proper divisors (1).

149334456421 is an equidigital number, since it uses as much as digits as its factorization.

149334456421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1244160, while the sum is 46.

The spelling of 149334456421 in words is "one hundred forty-nine billion, three hundred thirty-four million, four hundred fifty-six thousand, four hundred twenty-one".