142427081 has 4 divisors (see below), whose sum is σ = 142557312. Its totient is φ = 142296852.

The previous prime is 142427057. The next prime is 142427093. The reversal of 142427081 is 180724241.

142427081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 180724241 = 433 ⋅417377.

It is a cyclic number.

It is not a de Polignac number, because 142427081 - 2¹⁰ = 142426057 is a prime.

It is a super-2 number, since 2×142427081² = 40570946804361122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142427041) 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, 63461 + ... + 65666.

It is an arithmetic number, because the mean of its divisors is an integer number (35639328).

Almost surely, 2^142427081 is an apocalyptic number.

It is an amenable number.

142427081 is a deficient number, since it is larger than the sum of its proper divisors (130231).

142427081 is a wasteful number, since it uses less digits than its factorization.

142427081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 130230.

The product of its (nonzero) digits is 3584, while the sum is 29.

The square root of 142427081 is about 11934.2817546763. The cubic root of 142427081 is about 522.2328553558.

The spelling of 142427081 in words is "one hundred forty-two million, four hundred twenty-seven thousand, eighty-one".