429820123 has 4 divisors (see below), whose sum is σ = 438965280. Its totient is φ = 420674968.

The previous prime is 429820103. The next prime is 429820169. The reversal of 429820123 is 321028924.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-429820123 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (429820103) 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, 4572508 + ... + 4572601.

It is an arithmetic number, because the mean of its divisors is an integer number (109741320).

Almost surely, 2^429820123 is an apocalyptic number.

429820123 is a deficient number, since it is larger than the sum of its proper divisors (9145157).

429820123 is an equidigital number, since it uses as much as digits as its factorization.

429820123 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9145156.

The product of its (nonzero) digits is 6912, while the sum is 31.

The square root of 429820123 is about 20732.1036800417. The cubic root of 429820123 is about 754.6789699876.

The spelling of 429820123 in words is "four hundred twenty-nine million, eight hundred twenty thousand, one hundred twenty-three".