142512605 has 4 divisors (see below), whose sum is σ = 171015132. Its totient is φ = 114010080.

The previous prime is 142512533. The next prime is 142512607. The reversal of 142512605 is 506215241.

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 63409369 + 79103236 = 7963^2 + 8894^2 .

It is not a de Polignac number, because 142512605 - 2¹⁶ = 142447069 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 (142512607) 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, 14251256 + ... + 14251265.

It is an arithmetic number, because the mean of its divisors is an integer number (42753783).

Almost surely, 2^142512605 is an apocalyptic number.

It is an amenable number.

142512605 is a deficient number, since it is larger than the sum of its proper divisors (28502527).

142512605 is an equidigital number, since it uses as much as digits as its factorization.

142512605 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28502526.

The product of its (nonzero) digits is 2400, while the sum is 26.

The square root of 142512605 is about 11937.8643399898. The cubic root of 142512605 is about 522.3373638187.

Adding to 142512605 its reverse (506215241), we get a palindrome (648727846).

The spelling of 142512605 in words is "one hundred forty-two million, five hundred twelve thousand, six hundred five".