123403245 has 32 divisors (see below), whose sum is σ = 226437120. Its totient is φ = 56216640.

The previous prime is 123403243. The next prime is 123403261. The reversal of 123403245 is 542304321.

It is not a de Polignac number, because 123403245 - 2¹ = 123403243 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123403243) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 30766 + ... + 34544.

It is an arithmetic number, because the mean of its divisors is an integer number (7076160).

Almost surely, 2^123403245 is an apocalyptic number.

123403245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

123403245 is a deficient number, since it is larger than the sum of its proper divisors (103033875).

123403245 is a wasteful number, since it uses less digits than its factorization.

123403245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4105.

The product of its (nonzero) digits is 2880, while the sum is 24.

The square root of 123403245 is about 11108.7013192362. The cubic root of 123403245 is about 497.8618631076.

Adding to 123403245 its reverse (542304321), we get a palindrome (665707566).

The spelling of 123403245 in words is "one hundred twenty-three million, four hundred three thousand, two hundred forty-five".