142235249 has 16 divisors (see below), whose sum is σ = 155335488. Its totient is φ = 129460032.

The previous prime is 142235239. The next prime is 142235263. The reversal of 142235249 is 942532241.

142235249 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a de Polignac number, because none of the positive numbers 2^k-142235249 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142235239) 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, 463154 + ... + 463460.

It is an arithmetic number, because the mean of its divisors is an integer number (9708468).

Almost surely, 2^142235249 is an apocalyptic number.

It is an amenable number.

142235249 is a deficient number, since it is larger than the sum of its proper divisors (13100239).

142235249 is a wasteful number, since it uses less digits than its factorization.

142235249 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 704.

The product of its digits is 17280, while the sum is 32.

The square root of 142235249 is about 11926.2420317550. The cubic root of 142235249 is about 521.9982885789.

The spelling of 142235249 in words is "one hundred forty-two million, two hundred thirty-five thousand, two hundred forty-nine".