1142217552 has 40 divisors (see below), whose sum is σ = 3372262336. Its totient is φ = 326347776.

The previous prime is 1142217529. The next prime is 1142217581. The reversal of 1142217552 is 2557122411.

It is a happy 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, 1699393 + ... + 1700064.

Almost surely, 2^1142217552 is an apocalyptic number.

1142217552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1142217552 is an abundant number, since it is smaller than the sum of its proper divisors (2230044784).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1142217552 is a wasteful number, since it uses less digits than its factorization.

1142217552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3399475 (or 3399469 counting only the distinct ones).

The product of its digits is 5600, while the sum is 30.

The square root of 1142217552 is about 33796.7091889136. The cubic root of 1142217552 is about 1045.3208425479.

Adding to 1142217552 its reverse (2557122411), we get a palindrome (3699339963).

The spelling of 1142217552 in words is "one billion, one hundred forty-two million, two hundred seventeen thousand, five hundred fifty-two".