49000123 has 2 divisors, whose sum is σ = 49000124. Its totient is φ = 49000122.

The previous prime is 49000121. The next prime is 49000199. The reversal of 49000123 is 32100094.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 49000123 - 2¹ = 49000121 is a prime.

Together with 49000121, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 49000123.

It is not a weakly prime, because it can be changed into another prime (49000121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 24500061 + 24500062.

It is an arithmetic number, because the mean of its divisors is an integer number (24500062).

Almost surely, 2^49000123 is an apocalyptic number.

49000123 is a deficient number, since it is larger than the sum of its proper divisors (1).

49000123 is an equidigital number, since it uses as much as digits as its factorization.

49000123 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 216, while the sum is 19.

The square root of 49000123 is about 7000.0087857088. The cubic root of 49000123 is about 365.9308771888.

It can be divided in two parts, 4900012 and 3, that added together give a triangular number (4900015 = T₃₁₃₀).

The spelling of 49000123 in words is "forty-nine million, one hundred twenty-three", and thus it is an aban number.