1142120245 has 16 divisors (see below), whose sum is σ = 1566891648. Its totient is φ = 782890560.

The previous prime is 1142120237. The next prime is 1142120249. The reversal of 1142120245 is 5420212411.

It is not a de Polignac number, because 1142120245 - 2³ = 1142120237 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142120249) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 167350 + ... + 174040.

It is an arithmetic number, because the mean of its divisors is an integer number (97930728).

Almost surely, 2^1142120245 is an apocalyptic number.

It is an amenable number.

1142120245 is a deficient number, since it is larger than the sum of its proper divisors (424771403).

1142120245 is an equidigital number, since it uses as much as digits as its factorization.

1142120245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11580.

The product of its (nonzero) digits is 640, while the sum is 22.

The square root of 1142120245 is about 33795.2695654288. The cubic root of 1142120245 is about 1045.2911576239.

Adding to 1142120245 its reverse (5420212411), we get a palindrome (6562332656).

The spelling of 1142120245 in words is "one billion, one hundred forty-two million, one hundred twenty thousand, two hundred forty-five".