1142140631 has 8 divisors (see below), whose sum is σ = 1212348384. Its totient is φ = 1072268800.

The previous prime is 1142140627. The next prime is 1142140651. The reversal of 1142140631 is 1360412411.

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

It is a cyclic number.

It is not a de Polignac number, because 1142140631 - 2² = 1142140627 is a prime.

It is a super-2 number, since 2×1142140631² = 2608970441962156322, 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 = 1142140597 and 1142140606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142140651) 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, 76955 + ... + 90588.

It is an arithmetic number, because the mean of its divisors is an integer number (151543548).

Almost surely, 2^1142140631 is an apocalyptic number.

1142140631 is a deficient number, since it is larger than the sum of its proper divisors (70207753).

1142140631 is a wasteful number, since it uses less digits than its factorization.

1142140631 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167961.

The product of its (nonzero) digits is 576, while the sum is 23.

The square root of 1142140631 is about 33795.5711743418. The cubic root of 1142140631 is about 1045.2973768111.

The spelling of 1142140631 in words is "one billion, one hundred forty-two million, one hundred forty thousand, six hundred thirty-one".