1142140421031 has 4 divisors (see below), whose sum is σ = 1522853894712. Its totient is φ = 761426947352.

The previous prime is 1142140420991. The next prime is 1142140421053. The reversal of 1142140421031 is 1301240412411.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1142140421031 is a prime.

It is a super-2 number, since 2×1142140421031² (a number of 25 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 1142140420992 and 1142140421010.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142140491031) 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, 190356736836 + ... + 190356736841.

It is an arithmetic number, because the mean of its divisors is an integer number (380713473678).

Almost surely, 2^{1142140421031} is an apocalyptic number.

1142140421031 is a deficient number, since it is larger than the sum of its proper divisors (380713473681).

1142140421031 is an equidigital number, since it uses as much as digits as its factorization.

1142140421031 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380713473680.

The product of its (nonzero) digits is 768, while the sum is 24.

Adding to 1142140421031 its reverse (1301240412411), we get a palindrome (2443380833442).

The spelling of 1142140421031 in words is "one trillion, one hundred forty-two billion, one hundred forty million, four hundred twenty-one thousand, thirty-one".