123011429 has 4 divisors (see below), whose sum is σ = 128359776. Its totient is φ = 117663084.

The previous prime is 123011411. The next prime is 123011437. The reversal of 123011429 is 924110321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123011429 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23), and also a Moran number because the ratio is a prime number: 5348323 = 123011429 / (1 + 2 + 3 + 0 + 1 + 1 + 4 + 2 + 9).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123011459) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2674139 + ... + 2674184.

It is an arithmetic number, because the mean of its divisors is an integer number (32089944).

Almost surely, 2^123011429 is an apocalyptic number.

It is an amenable number.

123011429 is a deficient number, since it is larger than the sum of its proper divisors (5348347).

123011429 is an equidigital number, since it uses as much as digits as its factorization.

123011429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5348346.

The product of its (nonzero) digits is 432, while the sum is 23.

The square root of 123011429 is about 11091.0517535534. The cubic root of 123011429 is about 497.3343862608.

The spelling of 123011429 in words is "one hundred twenty-three million, eleven thousand, four hundred twenty-nine".