1142753285 has 4 divisors (see below), whose sum is σ = 1371303948. Its totient is φ = 914202624.

The previous prime is 1142753257. The next prime is 1142753291. The reversal of 1142753285 is 5823572411.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 735440161 + 407313124 = 27119^2 + 20182^2 .

It is a cyclic number.

It is not a de Polignac number, because 1142753285 - 2⁶ = 1142753221 is a prime.

It is a Duffinian number.

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, 114275324 + ... + 114275333.

It is an arithmetic number, because the mean of its divisors is an integer number (342825987).

Almost surely, 2^1142753285 is an apocalyptic number.

It is an amenable number.

1142753285 is a deficient number, since it is larger than the sum of its proper divisors (228550663).

1142753285 is an equidigital number, since it uses as much as digits as its factorization.

1142753285 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 228550662.

The product of its digits is 67200, while the sum is 38.

The square root of 1142753285 is about 33804.6340758187. The cubic root of 1142753285 is about 1045.4842455525.

The spelling of 1142753285 in words is "one billion, one hundred forty-two million, seven hundred fifty-three thousand, two hundred eighty-five".