123421726 has 32 divisors (see below), whose sum is σ = 204374016. Its totient is φ = 55704000.

The previous prime is 123421699. The next prime is 123421759. The reversal of 123421726 is 627124321.

It is a junction number, because it is equal to n+sod(n) for n = 123421694 and 123421703.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 57411 + ... + 59521.

It is an arithmetic number, because the mean of its divisors is an integer number (6386688).

Almost surely, 2^123421726 is an apocalyptic number.

123421726 is a deficient number, since it is larger than the sum of its proper divisors (80952290).

123421726 is a wasteful number, since it uses less digits than its factorization.

123421726 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2208.

The product of its digits is 4032, while the sum is 28.

The square root of 123421726 is about 11109.5331135021. The cubic root of 123421726 is about 497.8867153061.

The spelling of 123421726 in words is "one hundred twenty-three million, four hundred twenty-one thousand, seven hundred twenty-six".