1142453144 has 64 divisors (see below), whose sum is σ = 2601115200. Its totient is φ = 459938304.

The previous prime is 1142453131. The next prime is 1142453153. The reversal of 1142453144 is 4413542411.

It is a Harshad number since it is a multiple of its sum of digits (29).

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, 50582 + ... + 69594.

It is an arithmetic number, because the mean of its divisors is an integer number (40642425).

Almost surely, 2^1142453144 is an apocalyptic number.

1142453144 is a gapful number since it is divisible by the number (14) 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 1142453144, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1300557600).

1142453144 is an abundant number, since it is smaller than the sum of its proper divisors (1458662056).

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

1142453144 is a wasteful number, since it uses less digits than its factorization.

1142453144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19092 (or 19088 counting only the distinct ones).

The product of its digits is 7680, while the sum is 29.

The square root of 1142453144 is about 33800.1944373106. The cubic root of 1142453144 is about 1045.3927063529.

Adding to 1142453144 its reverse (4413542411), we get a palindrome (5555995555).

The spelling of 1142453144 in words is "one billion, one hundred forty-two million, four hundred fifty-three thousand, one hundred forty-four".