1142451420 has 96 divisors (see below), whose sum is σ = 3495937536. Its totient is φ = 276460800.

The previous prime is 1142451379. The next prime is 1142451421. The reversal of 1142451420 is 241542411.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142451421) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 478630 + ... + 481010.

It is an arithmetic number, because the mean of its divisors is an integer number (36416016).

Almost surely, 2^1142451420 is an apocalyptic number.

1142451420 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1142451420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1747968768).

1142451420 is an abundant number, since it is smaller than the sum of its proper divisors (2353486116).

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

1142451420 is a wasteful number, since it uses less digits than its factorization.

1142451420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3131 (or 3129 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 24.

The square root of 1142451420 is about 33800.1689344891. The cubic root of 1142451420 is about 1045.3921805085.

Adding to 1142451420 its reverse (241542411), we get a palindrome (1383993831).

Subtracting from 1142451420 its reverse (241542411), we obtain a palindrome (900909009).

The spelling of 1142451420 in words is "one billion, one hundred forty-two million, four hundred fifty-one thousand, four hundred twenty".