1142140031 has 4 divisors (see below), whose sum is σ = 1181524200. Its totient is φ = 1102755864.

The previous prime is 1142140007. The next prime is 1142140057. The reversal of 1142140031 is 1300412411.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1142140031 - 2¹⁸ = 1141877887 is a prime.

It is a super-2 number, since 2×1142140031² = 2608967700825361922, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1142139991 and 1142140009.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142142031) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19692041 + ... + 19692098.

It is an arithmetic number, because the mean of its divisors is an integer number (295381050).

Almost surely, 2^1142140031 is an apocalyptic number.

1142140031 is a deficient number, since it is larger than the sum of its proper divisors (39384169).

1142140031 is an equidigital number, since it uses as much as digits as its factorization.

1142140031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39384168.

The product of its (nonzero) digits is 96, while the sum is 17.

The square root of 1142140031 is about 33795.5622974378. The cubic root of 1142140031 is about 1045.2971937692.

Adding to 1142140031 its reverse (1300412411), we get a palindrome (2442552442).

The spelling of 1142140031 in words is "one billion, one hundred forty-two million, one hundred forty thousand, thirty-one".