142005101 has 4 divisors (see below), whose sum is σ = 162291552. Its totient is φ = 121718652.

The previous prime is 142005089. The next prime is 142005103. The reversal of 142005101 is 101500241.

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: 101500241 = 131 ⋅774811.

It is a cyclic number.

It is not a de Polignac number, because 142005101 - 2⁶ = 142005037 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142005103) 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, 10143215 + ... + 10143228.

It is an arithmetic number, because the mean of its divisors is an integer number (40572888).

Almost surely, 2^142005101 is an apocalyptic number.

It is an amenable number.

142005101 is a deficient number, since it is larger than the sum of its proper divisors (20286451).

142005101 is an equidigital number, since it uses as much as digits as its factorization.

142005101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20286450.

The product of its (nonzero) digits is 40, while the sum is 14.

The square root of 142005101 is about 11916.5893190963. The cubic root of 142005101 is about 521.7165916056.

Adding to 142005101 its reverse (101500241), we get a palindrome (243505342).

The spelling of 142005101 in words is "one hundred forty-two million, five thousand, one hundred one".