1142235513 has 20 divisors (see below), whose sum is σ = 1711826688. Its totient is φ = 759025080.

The previous prime is 1142235511. The next prime is 1142235529. The reversal of 1142235513 is 3155322411.

1142235513 is a `hidden beast` number, since 1 + 142 + 2 + 3 + 5 + 513 = 666.

It is not a de Polignac number, because 1142235513 - 2¹ = 1142235511 is a prime.

It is a hoax number, since the sum of its digits (27) coincides with the sum of the digits of its distinct prime factors.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is not an unprimeable number, because it can be changed into a prime (1142235511) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 2520 + ... + 47862.

Almost surely, 2^1142235513 is an apocalyptic number.

It is an amenable number.

1142235513 is a deficient number, since it is larger than the sum of its proper divisors (569591175).

1142235513 is an equidigital number, since it uses as much as digits as its factorization.

1142235513 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45666 (or 45657 counting only the distinct ones).

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

The square root of 1142235513 is about 33796.9749090063. The cubic root of 1142235513 is about 1045.3263216295.

Adding to 1142235513 its reverse (3155322411), we get a palindrome (4297557924).

The spelling of 1142235513 in words is "one billion, one hundred forty-two million, two hundred thirty-five thousand, five hundred thirteen".