1142742653 has 4 divisors (see below), whose sum is σ = 1230645948. Its totient is φ = 1054839360.

The previous prime is 1142742647. The next prime is 1142742683. The reversal of 1142742653 is 3562472411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3562472411 = 41 ⋅86889571.

It can be written as a sum of positive squares in 2 ways, for example, as 581147449 + 561595204 = 24107^2 + 23698^2 .

It is a cyclic number.

It is not a de Polignac number, because 1142742653 - 2⁴ = 1142742637 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1142742683) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43951628 + ... + 43951653.

It is an arithmetic number, because the mean of its divisors is an integer number (307661487).

Almost surely, 2^1142742653 is an apocalyptic number.

1142742653 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

1142742653 is a deficient number, since it is larger than the sum of its proper divisors (87903295).

1142742653 is an equidigital number, since it uses as much as digits as its factorization.

1142742653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 87903294.

The product of its digits is 40320, while the sum is 35.

The square root of 1142742653 is about 33804.4768189067. The cubic root of 1142742653 is about 1045.4810032012.

The spelling of 1142742653 in words is "one billion, one hundred forty-two million, seven hundred forty-two thousand, six hundred fifty-three".