123421245 has 64 divisors (see below), whose sum is σ = 218592000. Its totient is φ = 59222016.

The previous prime is 123421237. The next prime is 123421271. The reversal of 123421245 is 542124321.

It is not a de Polignac number, because 123421245 - 2³ = 123421237 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 900817 + ... + 900953.

It is an arithmetic number, because the mean of its divisors is an integer number (3415500).

Almost surely, 2^123421245 is an apocalyptic number.

123421245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123421245 is a deficient number, since it is larger than the sum of its proper divisors (95170755).

123421245 is a wasteful number, since it uses less digits than its factorization.

123421245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302.

The product of its digits is 1920, while the sum is 24.

The square root of 123421245 is about 11109.5114654066. The cubic root of 123421245 is about 497.8860685161.

Adding to 123421245 its reverse (542124321), we get a palindrome (665545566).

The spelling of 123421245 in words is "one hundred twenty-three million, four hundred twenty-one thousand, two hundred forty-five".