142508545 has 4 divisors (see below), whose sum is σ = 171010260. Its totient is φ = 114006832.

The previous prime is 142508543. The next prime is 142508563. The reversal of 142508545 is 545805241.

It is a happy number.

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 45859984 + 96648561 = 6772^2 + 9831^2 .

It is a cyclic number.

It is not a de Polignac number, because 142508545 - 2¹ = 142508543 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 142508545.

It is not an unprimeable number, because it can be changed into a prime (142508543) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14250850 + ... + 14250859.

It is an arithmetic number, because the mean of its divisors is an integer number (42752565).

Almost surely, 2^142508545 is an apocalyptic number.

It is an amenable number.

142508545 is a deficient number, since it is larger than the sum of its proper divisors (28501715).

142508545 is an equidigital number, since it uses as much as digits as its factorization.

142508545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28501714.

The product of its (nonzero) digits is 32000, while the sum is 34.

The square root of 142508545 is about 11937.6942916126. The cubic root of 142508545 is about 522.3324035327.

The spelling of 142508545 in words is "one hundred forty-two million, five hundred eight thousand, five hundred forty-five".