142653021 has 8 divisors (see below), whose sum is σ = 217376064. Its totient is φ = 81516000.

The previous prime is 142653011. The next prime is 142653029. The reversal of 142653021 is 120356241.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 142653021 - 2¹⁵ = 142620253 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 142652982 and 142653000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142653029) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3396480 + ... + 3396521.

It is an arithmetic number, because the mean of its divisors is an integer number (27172008).

Almost surely, 2^142653021 is an apocalyptic number.

It is an amenable number.

142653021 is a deficient number, since it is larger than the sum of its proper divisors (74723043).

142653021 is an equidigital number, since it uses as much as digits as its factorization.

142653021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6793011.

The product of its (nonzero) digits is 1440, while the sum is 24.

The square root of 142653021 is about 11943.7440109875. The cubic root of 142653021 is about 522.5088584687.

The spelling of 142653021 in words is "one hundred forty-two million, six hundred fifty-three thousand, twenty-one".