142252643 has 16 divisors (see below), whose sum is σ = 157397856. Its totient is φ = 127733760.

The previous prime is 142252637. The next prime is 142252681. The reversal of 142252643 is 346252241.

142252643 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is not a de Polignac number, because 142252643 - 2¹⁶ = 142187107 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142252633) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 221603 + ... + 222243.

It is an arithmetic number, because the mean of its divisors is an integer number (9837366).

Almost surely, 2^142252643 is an apocalyptic number.

142252643 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

142252643 is a deficient number, since it is larger than the sum of its proper divisors (15145213).

142252643 is a wasteful number, since it uses less digits than its factorization.

142252643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1094.

The product of its digits is 11520, while the sum is 29.

The square root of 142252643 is about 11926.9712416858. The cubic root of 142252643 is about 522.0195661647.

The spelling of 142252643 in words is "one hundred forty-two million, two hundred fifty-two thousand, six hundred forty-three".