123421286 has 4 divisors (see below), whose sum is σ = 185131932. Its totient is φ = 61710642.

The previous prime is 123421271. The next prime is 123421327. The reversal of 123421286 is 682124321.

It is a happy number.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 30855320 + ... + 30855323.

It is an arithmetic number, because the mean of its divisors is an integer number (46282983).

Almost surely, 2^123421286 is an apocalyptic number.

123421286 is a deficient number, since it is larger than the sum of its proper divisors (61710646).

123421286 is an equidigital number, since it uses as much as digits as its factorization.

123421286 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61710645.

The product of its digits is 4608, while the sum is 29.

The square root of 123421286 is about 11109.5133106721. The cubic root of 123421286 is about 497.8861236479.

The spelling of 123421286 in words is "one hundred twenty-three million, four hundred twenty-one thousand, two hundred eighty-six".