1142232305 has 32 divisors (see below), whose sum is σ = 1429553664. Its totient is φ = 875586816.

The previous prime is 1142232239. The next prime is 1142232307. The reversal of 1142232305 is 5032322411.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1142232305 is a prime.

It is a super-2 number, since 2×1142232305² = 2609389277171226050, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1142232307) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3062099 + ... + 3062471.

It is an arithmetic number, because the mean of its divisors is an integer number (44673552).

Almost surely, 2^1142232305 is an apocalyptic number.

It is an amenable number.

1142232305 is a deficient number, since it is larger than the sum of its proper divisors (287321359).

1142232305 is a wasteful number, since it uses less digits than its factorization.

1142232305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665.

The product of its (nonzero) digits is 1440, while the sum is 23.

The square root of 1142232305 is about 33796.9274491040. The cubic root of 1142232305 is about 1045.3253430193.

Adding to 1142232305 its reverse (5032322411), we get a palindrome (6174554716).

The spelling of 1142232305 in words is "one billion, one hundred forty-two million, two hundred thirty-two thousand, three hundred five".