142521255 has 16 divisors (see below), whose sum is σ = 253371360. Its totient is φ = 76011264.

The previous prime is 142521241. The next prime is 142521257. The reversal of 142521255 is 552125241.

It is not a de Polignac number, because 142521255 - 2⁶ = 142521191 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142521257) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 527722 + ... + 527991.

It is an arithmetic number, because the mean of its divisors is an integer number (15835710).

Almost surely, 2^142521255 is an apocalyptic number.

142521255 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

142521255 is a deficient number, since it is larger than the sum of its proper divisors (110850105).

142521255 is a wasteful number, since it uses less digits than its factorization.

142521255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1055727 (or 1055721 counting only the distinct ones).

The product of its digits is 4000, while the sum is 27.

The square root of 142521255 is about 11938.2266271000. The cubic root of 142521255 is about 522.3479316016.

Adding to 142521255 its reverse (552125241), we get a palindrome (694646496).

The spelling of 142521255 in words is "one hundred forty-two million, five hundred twenty-one thousand, two hundred fifty-five".