142688855 has 4 divisors (see below), whose sum is σ = 171226632. Its totient is φ = 114151080.

The previous prime is 142688839. The next prime is 142688857. The reversal of 142688855 is 558886241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 558886241 = 7949 ⋅70309.

It is not a de Polignac number, because 142688855 - 2⁴ = 142688839 is a prime.

It is a super-2 number, since 2×142688855² = 40720218682422050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142688857) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14268881 + ... + 14268890.

It is an arithmetic number, because the mean of its divisors is an integer number (42806658).

Almost surely, 2^142688855 is an apocalyptic number.

142688855 is a deficient number, since it is larger than the sum of its proper divisors (28537777).

142688855 is an equidigital number, since it uses as much as digits as its factorization.

142688855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28537776.

The product of its digits is 614400, while the sum is 47.

The square root of 142688855 is about 11945.2440326684. The cubic root of 142688855 is about 522.5526056785.

The spelling of 142688855 in words is "one hundred forty-two million, six hundred eighty-eight thousand, eight hundred fifty-five".