1142520245 has 4 divisors (see below), whose sum is σ = 1371024300. Its totient is φ = 914016192.

The previous prime is 1142520121. The next prime is 1142520259. The reversal of 1142520245 is 5420252411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5420252411 = 7 ⋅774321773.

It can be written as a sum of positive squares in 2 ways, for example, as 434055556 + 708464689 = 20834^2 + 26617^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1142520245 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 114252020 + ... + 114252029.

It is an arithmetic number, because the mean of its divisors is an integer number (342756075).

Almost surely, 2^1142520245 is an apocalyptic number.

It is an amenable number.

1142520245 is a deficient number, since it is larger than the sum of its proper divisors (228504055).

1142520245 is an equidigital number, since it uses as much as digits as its factorization.

1142520245 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228504054.

The product of its (nonzero) digits is 3200, while the sum is 26.

The square root of 1142520245 is about 33801.1870353690. The cubic root of 1142520245 is about 1045.4131726985.

Adding to 1142520245 its reverse (5420252411), we get a palindrome (6562772656).

The spelling of 1142520245 in words is "one billion, one hundred forty-two million, five hundred twenty thousand, two hundred forty-five".