1142505552 has 40 divisors (see below), whose sum is σ = 2953179040. Its totient is φ = 380615040.

The previous prime is 1142505523. The next prime is 1142505557. The reversal of 1142505552 is 2555052411.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142505557) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 91527 + ... + 103257.

It is an arithmetic number, because the mean of its divisors is an integer number (73829476).

Almost surely, 2^1142505552 is an apocalyptic number.

1142505552 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1142505552 is an abundant number, since it is smaller than the sum of its proper divisors (1810673488).

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

1142505552 is a wasteful number, since it uses less digits than its factorization.

1142505552 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13771 (or 13765 counting only the distinct ones).

The product of its (nonzero) digits is 10000, while the sum is 30.

The square root of 1142505552 is about 33800.9696902323. The cubic root of 1142505552 is about 1045.4086912837.

Adding to 1142505552 its reverse (2555052411), we get a palindrome (3697557963).

The spelling of 1142505552 in words is "one billion, one hundred forty-two million, five hundred five thousand, five hundred fifty-two".