123613438 has 16 divisors (see below), whose sum is σ = 200004336. Its totient is φ = 56960640.

The previous prime is 123613423. The next prime is 123613453. The reversal of 123613438 is 834316321.

It is an interprime number because it is at equal distance from previous prime (123613423) and next prime (123613453).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14278 + ... + 21238.

It is an arithmetic number, because the mean of its divisors is an integer number (12500271).

Almost surely, 2^123613438 is an apocalyptic number.

123613438 is a deficient number, since it is larger than the sum of its proper divisors (76390898).

123613438 is a wasteful number, since it uses less digits than its factorization.

123613438 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7659.

The product of its digits is 10368, while the sum is 31.

The square root of 123613438 is about 11118.1580308970. The cubic root of 123613438 is about 498.1443724791.

Adding to 123613438 its reverse (834316321), we get a palindrome (957929759).

The spelling of 123613438 in words is "one hundred twenty-three million, six hundred thirteen thousand, four hundred thirty-eight".