1423121424 has 20 divisors (see below), whose sum is σ = 3676397136. Its totient is φ = 474373792.

The previous prime is 1423121423. The next prime is 1423121429. The reversal of 1423121424 is 4241213241.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a nude number because it is divisible by every one of its digits.

It is a junction number, because it is equal to n+sod(n) for n = 1423121394 and 1423121403.

It is not an unprimeable number, because it can be changed into a prime (1423121423) 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, 14824134 + ... + 14824229.

Almost surely, 2^1423121424 is an apocalyptic number.

It is an amenable number.

1423121424 is an abundant number, since it is smaller than the sum of its proper divisors (2253275712).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1423121424 is a wasteful number, since it uses less digits than its factorization.

1423121424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29648374 (or 29648368 counting only the distinct ones).

The product of its digits is 1536, while the sum is 24.

The square root of 1423121424 is about 37724.2816233789. The cubic root of 1423121424 is about 1124.8138421851.

Adding to 1423121424 its reverse (4241213241), we get a palindrome (5664334665).

The spelling of 1423121424 in words is "one billion, four hundred twenty-three million, one hundred twenty-one thousand, four hundred twenty-four".