142768453 has 4 divisors (see below), whose sum is σ = 142794028. Its totient is φ = 142742880.

The previous prime is 142768441. The next prime is 142768463. The reversal of 142768453 is 354867241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 354867241 = 59 ⋅6014699.

It can be written as a sum of positive squares in 2 ways, for example, as 81036004 + 61732449 = 9002^2 + 7857^2 .

It is a cyclic number.

It is not a de Polignac number, because 142768453 - 2²¹ = 140671301 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 (142768463) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 438 + ... + 16903.

It is an arithmetic number, because the mean of its divisors is an integer number (35698507).

Almost surely, 2^142768453 is an apocalyptic number.

It is an amenable number.

142768453 is a deficient number, since it is larger than the sum of its proper divisors (25575).

142768453 is an equidigital number, since it uses as much as digits as its factorization.

142768453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25574.

The product of its digits is 161280, while the sum is 40.

The square root of 142768453 is about 11948.5753544094. The cubic root of 142768453 is about 522.6497550794.

The spelling of 142768453 in words is "one hundred forty-two million, seven hundred sixty-eight thousand, four hundred fifty-three".