123426734 has 4 divisors (see below), whose sum is σ = 185140104. Its totient is φ = 61713366.

The previous prime is 123426733. The next prime is 123426767. The reversal of 123426734 is 437624321.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 437624321 = 19 ⋅23032859.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 123426734.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123426731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30856682 + ... + 30856685.

It is an arithmetic number, because the mean of its divisors is an integer number (46285026).

Almost surely, 2^123426734 is an apocalyptic number.

123426734 is a deficient number, since it is larger than the sum of its proper divisors (61713370).

123426734 is an equidigital number, since it uses as much as digits as its factorization.

123426734 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61713369.

The product of its digits is 24192, while the sum is 32.

The square root of 123426734 is about 11109.7585032259. The cubic root of 123426734 is about 497.8934493527.

The spelling of 123426734 in words is "one hundred twenty-three million, four hundred twenty-six thousand, seven hundred thirty-four".