1142111421 has 48 divisors (see below), whose sum is σ = 1906265088. Its totient is φ = 677386800.

The previous prime is 1142111419. The next prime is 1142111429. The reversal of 1142111421 is 1241112411.

It is not a de Polignac number, because 1142111421 - 2¹ = 1142111419 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1142111394 and 1142111403.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142111429) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 121086 + ... + 130176.

It is an arithmetic number, because the mean of its divisors is an integer number (39713856).

Almost surely, 2^1142111421 is an apocalyptic number.

1142111421 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1142111421 is a deficient number, since it is larger than the sum of its proper divisors (764153667).

1142111421 is an equidigital number, since it uses as much as digits as its factorization.

1142111421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9164 (or 9152 counting only the distinct ones).

The product of its digits is 64, while the sum is 18.

The square root of 1142111421 is about 33795.1390143612. The cubic root of 1142111421 is about 1045.2884656502.

Adding to 1142111421 its reverse (1241112411), we get a palindrome (2383223832).

The spelling of 1142111421 in words is "one billion, one hundred forty-two million, one hundred eleven thousand, four hundred twenty-one".