1142544403 has 32 divisors (see below), whose sum is σ = 1545933312. Its totient is φ = 815443200.

The previous prime is 1142544383. The next prime is 1142544437. The reversal of 1142544403 is 3044452411.

It is not a de Polignac number, because 1142544403 - 2¹⁷ = 1142413331 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1142544493) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 126775 + ... + 135487.

It is an arithmetic number, because the mean of its divisors is an integer number (48310416).

Almost surely, 2^1142544403 is an apocalyptic number.

1142544403 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

1142544403 is a deficient number, since it is larger than the sum of its proper divisors (403388909).

1142544403 is a wasteful number, since it uses less digits than its factorization.

1142544403 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8875.

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 1142544403 is about 33801.5443877939. The cubic root of 1142544403 is about 1045.4205408870.

Adding to 1142544403 its reverse (3044452411), we get a palindrome (4186996814).

It can be divided in two parts, 1142 and 544403, that added together give a palindrome (545545).

The spelling of 1142544403 in words is "one billion, one hundred forty-two million, five hundred forty-four thousand, four hundred three".