1142220051 has 24 divisors (see below), whose sum is σ = 1929424640. Its totient is φ = 637516656.

The previous prime is 1142220019. The next prime is 1142220061. The reversal of 1142220051 is 1500222411.

It is not a de Polignac number, because 1142220051 - 2⁵ = 1142220019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1142220011) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 208111 + ... + 213528.

Almost surely, 2^1142220051 is an apocalyptic number.

1142220051 is a deficient number, since it is larger than the sum of its proper divisors (787204589).

1142220051 is a wasteful number, since it uses less digits than its factorization.

1142220051 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 421695 (or 421692 counting only the distinct ones).

The product of its (nonzero) digits is 160, while the sum is 18.

The square root of 1142220051 is about 33796.7461599486. The cubic root of 1142220051 is about 1045.3216048823.

Adding to 1142220051 its reverse (1500222411), we get a palindrome (2642442462).

The spelling of 1142220051 in words is "one billion, one hundred forty-two million, two hundred twenty thousand, fifty-one".