1234212149 has 2 divisors, whose sum is σ = 1234212150. Its totient is φ = 1234212148.

The previous prime is 1234212107. The next prime is 1234212157. The reversal of 1234212149 is 9412124321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1170324100 + 63888049 = 34210^2 + 7993^2 .

It is an emirp because it is prime and its reverse (9412124321) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1234212149 - 2⁸ = 1234211893 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1234212169) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 617106074 + 617106075.

It is an arithmetic number, because the mean of its divisors is an integer number (617106075).

Almost surely, 2^1234212149 is an apocalyptic number.

It is an amenable number.

1234212149 is a deficient number, since it is larger than the sum of its proper divisors (1).

1234212149 is an equidigital number, since it uses as much as digits as its factorization.

1234212149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3456, while the sum is 29.

The square root of 1234212149 is about 35131.3556385176. The cubic root of 1234212149 is about 1072.6629304942.

The spelling of 1234212149 in words is "one billion, two hundred thirty-four million, two hundred twelve thousand, one hundred forty-nine".