1143420424321 has 16 divisors (see below), whose sum is σ = 1319632838784. Its totient is φ = 970441807104.

The previous prime is 1143420424273. The next prime is 1143420424343. The reversal of 1143420424321 is 1234240243411.

It is a happy number.

It is not a de Polignac number, because 1143420424321 - 2³¹ = 1141272940673 is a prime.

It is a super-2 number, since 2×1143420424321² (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1143420724321) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 87790 + ... + 1514776.

It is an arithmetic number, because the mean of its divisors is an integer number (82477052424).

Almost surely, 2^{1143420424321} is an apocalyptic number.

It is an amenable number.

1143420424321 is a deficient number, since it is larger than the sum of its proper divisors (176212414463).

1143420424321 is a wasteful number, since it uses less digits than its factorization.

1143420424321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1428120.

The product of its (nonzero) digits is 18432, while the sum is 31.

Adding to 1143420424321 its reverse (1234240243411), we get a palindrome (2377660667732).

The spelling of 1143420424321 in words is "one trillion, one hundred forty-three billion, four hundred twenty million, four hundred twenty-four thousand, three hundred twenty-one".