1142165532 has 12 divisors (see below), whose sum is σ = 2665052936. Its totient is φ = 380721840.

The previous prime is 1142165503. The next prime is 1142165537. The reversal of 1142165532 is 2355612411.

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 1142165532.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142165537) 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, 47590219 + ... + 47590242.

Almost surely, 2^1142165532 is an apocalyptic number.

1142165532 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1142165532 is an abundant number, since it is smaller than the sum of its proper divisors (1522887404).

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

1142165532 is a wasteful number, since it uses less digits than its factorization.

1142165532 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95180468 (or 95180466 counting only the distinct ones).

The product of its digits is 7200, while the sum is 30.

The square root of 1142165532 is about 33795.9395785943. The cubic root of 1142165532 is about 1045.3049732956.

Adding to 1142165532 its reverse (2355612411), we get a palindrome (3497777943).

The spelling of 1142165532 in words is "one billion, one hundred forty-two million, one hundred sixty-five thousand, five hundred thirty-two".