1423444140 has 36 divisors (see below), whose sum is σ = 4317781104. Its totient is φ = 379585056.

The previous prime is 1423444123. The next prime is 1423444151. The reversal of 1423444140 is 414443241.

1423444140 is a `hidden beast` number, since 14 + 234 + 4 + 414 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3953832 + ... + 3954191.

It is an arithmetic number, because the mean of its divisors is an integer number (119938364).

Almost surely, 2^1423444140 is an apocalyptic number.

1423444140 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1423444140 is an abundant number, since it is smaller than the sum of its proper divisors (2894336964).

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

1423444140 is a wasteful number, since it uses less digits than its factorization.

1423444140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7908038 (or 7908033 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 27.

The square root of 1423444140 is about 37728.5586790696. The cubic root of 1423444140 is about 1124.8988590555.

Adding to 1423444140 its reverse (414443241), we get a palindrome (1837887381).

The spelling of 1423444140 in words is "one billion, four hundred twenty-three million, four hundred forty-four thousand, one hundred forty".