1234435423 has 4 divisors (see below), whose sum is σ = 1329392008. Its totient is φ = 1139478840.

The previous prime is 1234435417. The next prime is 1234435457. The reversal of 1234435423 is 3245344321.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1234435423 - 2¹³ = 1234427231 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1234435123) 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, 47478273 + ... + 47478298.

It is an arithmetic number, because the mean of its divisors is an integer number (332348002).

Almost surely, 2^1234435423 is an apocalyptic number.

1234435423 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1234435423 is a deficient number, since it is larger than the sum of its proper divisors (94956585).

1234435423 is an equidigital number, since it uses as much as digits as its factorization.

1234435423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94956584.

The product of its digits is 34560, while the sum is 31.

The square root of 1234435423 is about 35134.5331974113. The cubic root of 1234435423 is about 1072.7276096238.

Adding to 1234435423 its reverse (3245344321), we get a palindrome (4479779744).

The spelling of 1234435423 in words is "one billion, two hundred thirty-four million, four hundred thirty-five thousand, four hundred twenty-three".