142504257 has 8 divisors (see below), whose sum is σ = 217149376. Its totient is φ = 81430992.

The previous prime is 142504223. The next prime is 142504259. The reversal of 142504257 is 752405241.

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

It is not a de Polignac number, because 142504257 - 2⁷ = 142504129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142504259) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3392938 + ... + 3392979.

It is an arithmetic number, because the mean of its divisors is an integer number (27143672).

Almost surely, 2^142504257 is an apocalyptic number.

It is an amenable number.

142504257 is a deficient number, since it is larger than the sum of its proper divisors (74645119).

142504257 is an equidigital number, since it uses as much as digits as its factorization.

142504257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6785927.

The product of its (nonzero) digits is 11200, while the sum is 30.

The square root of 142504257 is about 11937.5146910904. The cubic root of 142504257 is about 522.3271645865.

Adding to 142504257 its reverse (752405241), we get a palindrome (894909498).

The spelling of 142504257 in words is "one hundred forty-two million, five hundred four thousand, two hundred fifty-seven".