123401433 has 4 divisors (see below), whose sum is σ = 164535248. Its totient is φ = 82267620.

The previous prime is 123401423. The next prime is 123401449. The reversal of 123401433 is 334104321.

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 not a de Polignac number, because 123401433 - 2¹³ = 123393241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123401423) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 20566903 + ... + 20566908.

It is an arithmetic number, because the mean of its divisors is an integer number (41133812).

Almost surely, 2^123401433 is an apocalyptic number.

It is an amenable number.

123401433 is a deficient number, since it is larger than the sum of its proper divisors (41133815).

123401433 is an equidigital number, since it uses as much as digits as its factorization.

123401433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 41133814.

The product of its (nonzero) digits is 864, while the sum is 21.

The square root of 123401433 is about 11108.6197612485. The cubic root of 123401433 is about 497.8594262994.

Adding to 123401433 its reverse (334104321), we get a palindrome (457505754).

The spelling of 123401433 in words is "one hundred twenty-three million, four hundred one thousand, four hundred thirty-three".