149126449 has 2 divisors, whose sum is σ = 149126450. Its totient is φ = 149126448.

The previous prime is 149126447. The next prime is 149126473. The reversal of 149126449 is 944621941.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 149010849 + 115600 = 12207^2 + 340^2 .

It is a cyclic number.

It is not a de Polignac number, because 149126449 - 2¹ = 149126447 is a prime.

Together with 149126447, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (149126447) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74563224 + 74563225.

It is an arithmetic number, because the mean of its divisors is an integer number (74563225).

Almost surely, 2^149126449 is an apocalyptic number.

It is an amenable number.

149126449 is a deficient number, since it is larger than the sum of its proper divisors (1).

149126449 is an equidigital number, since it uses as much as digits as its factorization.

149126449 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 62208, while the sum is 40.

The square root of 149126449 is about 12211.7340701474. The cubic root of 149126449 is about 530.2958464568.

The spelling of 149126449 in words is "one hundred forty-nine million, one hundred twenty-six thousand, four hundred forty-nine".