1142353521 has 12 divisors (see below), whose sum is σ = 1690312260. Its totient is φ = 742993920.

The previous prime is 1142353519. The next prime is 1142353543. The reversal of 1142353521 is 1253532411.

1142353521 is a `hidden beast` number, since 114 + 23 + 5 + 3 + 521 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 390497121 + 751856400 = 19761^2 + 27420^2 .

It is not a de Polignac number, because 1142353521 - 2¹ = 1142353519 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1142353561) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1547536 + ... + 1548273.

It is an arithmetic number, because the mean of its divisors is an integer number (140859355).

Almost surely, 2^1142353521 is an apocalyptic number.

It is an amenable number.

1142353521 is a deficient number, since it is larger than the sum of its proper divisors (547958739).

1142353521 is a wasteful number, since it uses less digits than its factorization.

1142353521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3095856 (or 3095853 counting only the distinct ones).

The product of its digits is 3600, while the sum is 27.

The square root of 1142353521 is about 33798.7207006419. The cubic root of 1142353521 is about 1045.3623190571.

Adding to 1142353521 its reverse (1253532411), we get a palindrome (2395885932).

The spelling of 1142353521 in words is "one billion, one hundred forty-two million, three hundred fifty-three thousand, five hundred twenty-one".