149312243 has 2 divisors, whose sum is σ = 149312244. Its totient is φ = 149312242.

The previous prime is 149312221. The next prime is 149312263. The reversal of 149312243 is 342213941.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 149312243 - 2⁶ = 149312179 is a prime.

It is not a weakly prime, because it can be changed into another prime (149312263) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 74656121 + 74656122.

It is an arithmetic number, because the mean of its divisors is an integer number (74656122).

Almost surely, 2^149312243 is an apocalyptic number.

149312243 is a deficient number, since it is larger than the sum of its proper divisors (1).

149312243 is an equidigital number, since it uses as much as digits as its factorization.

149312243 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5184, while the sum is 29.

The square root of 149312243 is about 12219.3388937373. The cubic root of 149312243 is about 530.5159837928.

The spelling of 149312243 in words is "one hundred forty-nine million, three hundred twelve thousand, two hundred forty-three".