1140042431 has 8 divisors (see below), whose sum is σ = 1243938000. Its totient is φ = 1036189440.

The previous prime is 1140042413. The next prime is 1140042439. The reversal of 1140042431 is 1342400411.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1140042431 - 2¹⁰ = 1140041407 is a prime.

It is a super-2 number, since 2×1140042431² = 2599393488960779522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1140042439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 76175 + ... + 89903.

It is an arithmetic number, because the mean of its divisors is an integer number (155492250).

Almost surely, 2^1140042431 is an apocalyptic number.

1140042431 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

1140042431 is a deficient number, since it is larger than the sum of its proper divisors (103895569).

1140042431 is a wasteful number, since it uses less digits than its factorization.

1140042431 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21289.

The product of its (nonzero) digits is 384, while the sum is 20.

The square root of 1140042431 is about 33764.5143753024. The cubic root of 1140042431 is about 1044.6568872716.

Adding to 1140042431 its reverse (1342400411), we get a palindrome (2482442842).

The spelling of 1140042431 in words is "one billion, one hundred forty million, forty-two thousand, four hundred thirty-one".