1142431231021 has 8 divisors (see below), whose sum is σ = 1146600137984. Its totient is φ = 1138262645520.

The previous prime is 1142431231003. The next prime is 1142431231027. The reversal of 1142431231021 is 1201321342411.

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 1142431231021 - 2⁷ = 1142431230893 is a prime.

It is a super-2 number, since 2×1142431231021² (a number of 25 digits) 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 (1142431231027) 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, 8839456 + ... + 8967766.

It is an arithmetic number, because the mean of its divisors is an integer number (143325017248).

Almost surely, 2^{1142431231021} is an apocalyptic number.

It is an amenable number.

1142431231021 is a deficient number, since it is larger than the sum of its proper divisors (4168906963).

1142431231021 is a wasteful number, since it uses less digits than its factorization.

1142431231021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 160731.

The product of its (nonzero) digits is 1152, while the sum is 25.

Adding to 1142431231021 its reverse (1201321342411), we get a palindrome (2343752573432).

The spelling of 1142431231021 in words is "one trillion, one hundred forty-two billion, four hundred thirty-one million, two hundred thirty-one thousand, twenty-one".