123011434 has 32 divisors (see below), whose sum is σ = 239057280. Its totient is φ = 46101312.

The previous prime is 123011411. The next prime is 123011437. The reversal of 123011434 is 434110321.

It is a Harshad number since it is a multiple of its sum of digits (19).

It is not an unprimeable number, because it can be changed into a prime (123011437) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14329 + ... + 21244.

It is an arithmetic number, because the mean of its divisors is an integer number (7470540).

Almost surely, 2^123011434 is an apocalyptic number.

123011434 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

123011434 is a deficient number, since it is larger than the sum of its proper divisors (116045846).

123011434 is a wasteful number, since it uses less digits than its factorization.

123011434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 35614.

The product of its (nonzero) digits is 288, while the sum is 19.

The square root of 123011434 is about 11091.0519789603. The cubic root of 123011434 is about 497.3343929991.

Adding to 123011434 its reverse (434110321), we get a palindrome (557121755).

The spelling of 123011434 in words is "one hundred twenty-three million, eleven thousand, four hundred thirty-four".