142653487 has 4 divisors (see below), whose sum is σ = 143103816. Its totient is φ = 142203160.

The previous prime is 142653481. The next prime is 142653499. The reversal of 142653487 is 784356241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 784356241 = 71 ⋅11047271.

It is a cyclic number.

It is not a de Polignac number, because 142653487 - 2⁷ = 142653359 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 (142653481) 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, 224689 + ... + 225322.

It is an arithmetic number, because the mean of its divisors is an integer number (35775954).

Almost surely, 2^142653487 is an apocalyptic number.

142653487 is a deficient number, since it is larger than the sum of its proper divisors (450329).

142653487 is an equidigital number, since it uses as much as digits as its factorization.

142653487 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 450328.

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

The square root of 142653487 is about 11943.7635190923. The cubic root of 142653487 is about 522.5094274224.

The spelling of 142653487 in words is "one hundred forty-two million, six hundred fifty-three thousand, four hundred eighty-seven".