123012240120149 has 2 divisors, whose sum is σ = 123012240120150. Its totient is φ = 123012240120148.

The previous prime is 123012240120109. The next prime is 123012240120157. The reversal of 123012240120149 is 941021042210321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 75684031917649 + 47328208202500 = 8699657^2 + 6879550^2 .

It is a cyclic number.

It is not a de Polignac number, because 123012240120149 - 2⁴⁴ = 105420054075733 is a prime.

It is a super-2 number, since 2×123012240120149² (a number of 29 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123012240120109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61506120060074 + 61506120060075.

It is an arithmetic number, because the mean of its divisors is an integer number (61506120060075).

Almost surely, 2^{123012240120149} is an apocalyptic number.

It is an amenable number.

123012240120149 is a deficient number, since it is larger than the sum of its proper divisors (1).

123012240120149 is an equidigital number, since it uses as much as digits as its factorization.

123012240120149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 6912, while the sum is 32.

The spelling of 123012240120149 in words is "one hundred twenty-three trillion, twelve billion, two hundred forty million, one hundred twenty thousand, one hundred forty-nine".