123032143 has 4 divisors (see below), whose sum is σ = 132496168. Its totient is φ = 113568120.

The previous prime is 123032101. The next prime is 123032153. The reversal of 123032143 is 341230321.

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-123032143 is a prime.

It is a super-2 number, since 2×123032143² = 30273816422344898, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 123032143.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123032153) 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, 4731993 + ... + 4732018.

It is an arithmetic number, because the mean of its divisors is an integer number (33124042).

Almost surely, 2^123032143 is an apocalyptic number.

123032143 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

123032143 is a deficient number, since it is larger than the sum of its proper divisors (9464025).

123032143 is an equidigital number, since it uses as much as digits as its factorization.

123032143 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9464024.

The product of its (nonzero) digits is 432, while the sum is 19.

The square root of 123032143 is about 11091.9855301024. The cubic root of 123032143 is about 497.3623002153.

Adding to 123032143 its reverse (341230321), we get a palindrome (464262464).

The spelling of 123032143 in words is "one hundred twenty-three million, thirty-two thousand, one hundred forty-three".