1423433121 has 32 divisors (see below), whose sum is σ = 2134774656. Its totient is φ = 836160000.

The previous prime is 1423433119. The next prime is 1423433149. The reversal of 1423433121 is 1213343241.

It is a happy number.

It is not a de Polignac number, because 1423433121 - 2¹ = 1423433119 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1423433091 and 1423433100.

It is not an unprimeable number, because it can be changed into a prime (1423433021) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 209071 + ... + 215771.

It is an arithmetic number, because the mean of its divisors is an integer number (66711708).

Almost surely, 2^1423433121 is an apocalyptic number.

1423433121 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1423433121 is a deficient number, since it is larger than the sum of its proper divisors (711341535).

1423433121 is a wasteful number, since it uses less digits than its factorization.

1423433121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6913.

The product of its digits is 1728, while the sum is 24.

The square root of 1423433121 is about 37728.4126488248. The cubic root of 1423433121 is about 1124.8959564027.

Adding to 1423433121 its reverse (1213343241), we get a palindrome (2636776362).

The spelling of 1423433121 in words is "one billion, four hundred twenty-three million, four hundred thirty-three thousand, one hundred twenty-one".