149911123 has 2 divisors, whose sum is σ = 149911124. Its totient is φ = 149911122.

The previous prime is 149911103. The next prime is 149911127. The reversal of 149911123 is 321119941.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 149911123 - 2¹³ = 149902931 is a prime.

It is a super-2 number, since 2×149911123² = 44946689598242258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (149911127) 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, 74955561 + 74955562.

It is an arithmetic number, because the mean of its divisors is an integer number (74955562).

Almost surely, 2^149911123 is an apocalyptic number.

149911123 is a deficient number, since it is larger than the sum of its proper divisors (1).

149911123 is an equidigital number, since it uses as much as digits as its factorization.

149911123 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1944, while the sum is 31.

The square root of 149911123 is about 12243.8197879583. The cubic root of 149911123 is about 531.2243239632.

The spelling of 149911123 in words is "one hundred forty-nine million, nine hundred eleven thousand, one hundred twenty-three".