1142731238 has 32 divisors (see below), whose sum is σ = 1935774720. Its totient is φ = 501228000.

The previous prime is 1142731237. The next prime is 1142731243. The reversal of 1142731238 is 8321372411.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142731237) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 256268 + ... + 260688.

It is an arithmetic number, because the mean of its divisors is an integer number (60492960).

Almost surely, 2^1142731238 is an apocalyptic number.

1142731238 is a deficient number, since it is larger than the sum of its proper divisors (793043482).

1142731238 is a wasteful number, since it uses less digits than its factorization.

1142731238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4844.

The product of its digits is 8064, while the sum is 32.

The square root of 1142731238 is about 33804.3079799010. The cubic root of 1142731238 is about 1045.4775220425.

It can be divided in two parts, 114273 and 1238, that added together give a palindrome (115511).

The spelling of 1142731238 in words is "one billion, one hundred forty-two million, seven hundred thirty-one thousand, two hundred thirty-eight".