142421055 has 32 divisors (see below), whose sum is σ = 274137600. Its totient is φ = 61679232.

The previous prime is 142421051. The next prime is 142421113. The reversal of 142421055 is 550124241.

It is not a de Polignac number, because 142421055 - 2² = 142421051 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142421051) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 33700 + ... + 37689.

It is an arithmetic number, because the mean of its divisors is an integer number (8566800).

Almost surely, 2^142421055 is an apocalyptic number.

142421055 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

142421055 is a deficient number, since it is larger than the sum of its proper divisors (131716545).

142421055 is a wasteful number, since it uses less digits than its factorization.

142421055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71423.

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 142421055 is about 11934.0292860375. The cubic root of 142421055 is about 522.2254901377.

Adding to 142421055 its reverse (550124241), we get a palindrome (692545296).

The spelling of 142421055 in words is "one hundred forty-two million, four hundred twenty-one thousand, fifty-five".