123921026 has 4 divisors (see below), whose sum is σ = 185881542. Its totient is φ = 61960512.

The previous prime is 123921023. The next prime is 123921047. The reversal of 123921026 is 620129321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 105042001 + 18879025 = 10249^2 + 4345^2 .

It is a junction number, because it is equal to n+sod(n) for n = 123920986 and 123921004.

It is not an unprimeable number, because it can be changed into a prime (123921023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30980255 + ... + 30980258.

Almost surely, 2^123921026 is an apocalyptic number.

123921026 is a deficient number, since it is larger than the sum of its proper divisors (61960516).

123921026 is an equidigital number, since it uses as much as digits as its factorization.

123921026 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61960515.

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 123921026 is about 11131.9821235933. The cubic root of 123921026 is about 498.5572087111.

The spelling of 123921026 in words is "one hundred twenty-three million, nine hundred twenty-one thousand, twenty-six".