1142122451 has 4 divisors (see below), whose sum is σ = 1145573304. Its totient is φ = 1138671600.

The previous prime is 1142122427. The next prime is 1142122453. The reversal of 1142122451 is 1542212411.

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

It is a cyclic number.

It is not a de Polignac number, because 1142122451 - 2¹⁴ = 1142106067 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1142122453) 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, 1724930 + ... + 1725591.

It is an arithmetic number, because the mean of its divisors is an integer number (286393326).

Almost surely, 2^1142122451 is an apocalyptic number.

1142122451 is a deficient number, since it is larger than the sum of its proper divisors (3450853).

1142122451 is an equidigital number, since it uses as much as digits as its factorization.

1142122451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3450852.

The product of its digits is 640, while the sum is 23.

The square root of 1142122451 is about 33795.3022031169. The cubic root of 1142122451 is about 1045.2918306152.

Adding to 1142122451 its reverse (1542212411), we get a palindrome (2684334862).

The spelling of 1142122451 in words is "one billion, one hundred forty-two million, one hundred twenty-two thousand, four hundred fifty-one".