1421133144 has 64 divisors (see below), whose sum is σ = 3724237440. Its totient is φ = 451395840.

The previous prime is 1421133083. The next prime is 1421133163. The reversal of 1421133144 is 4413311241.

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 congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 25519 + ... + 59105.

It is an arithmetic number, because the mean of its divisors is an integer number (58191210).

Almost surely, 2^1421133144 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1421133144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1862118720).

1421133144 is an abundant number, since it is smaller than the sum of its proper divisors (2303104296).

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

1421133144 is a wasteful number, since it uses less digits than its factorization.

1421133144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33680 (or 33676 counting only the distinct ones).

The product of its digits is 1152, while the sum is 24.

The square root of 1421133144 is about 37697.9196242976. The cubic root of 1421133144 is about 1124.2897624710.

Adding to 1421133144 its reverse (4413311241), we get a palindrome (5834444385).

The spelling of 1421133144 in words is "one billion, four hundred twenty-one million, one hundred thirty-three thousand, one hundred forty-four".