1142444215 has 8 divisors (see below), whose sum is σ = 1495563408. Its totient is φ = 830868480.

The previous prime is 1142444159. The next prime is 1142444231. The reversal of 1142444215 is 5124442411.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1142444215 - 2¹⁵ = 1142411447 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10385802 + ... + 10385911.

It is an arithmetic number, because the mean of its divisors is an integer number (186945426).

Almost surely, 2^1142444215 is an apocalyptic number.

1142444215 is a deficient number, since it is larger than the sum of its proper divisors (353119193).

1142444215 is a wasteful number, since it uses less digits than its factorization.

1142444215 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20771729.

The product of its digits is 5120, while the sum is 28.

The square root of 1142444215 is about 33800.0623520135. The cubic root of 1142444215 is about 1045.3899828756.

Adding to 1142444215 its reverse (5124442411), we get a palindrome (6266886626).

The spelling of 1142444215 in words is "one billion, one hundred forty-two million, four hundred forty-four thousand, two hundred fifteen".