142342001 has 4 divisors (see below), whose sum is σ = 142373604. Its totient is φ = 142310400.

The previous prime is 142341967. The next prime is 142342019. The reversal of 142342001 is 100243241.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 100243241 = 7 ⋅14320463.

It can be written as a sum of positive squares in 2 ways, for example, as 69222400 + 73119601 = 8320^2 + 8551^2 .

It is a cyclic number.

It is not a de Polignac number, because 142342001 - 2¹⁰ = 142340977 is a prime.

It is a super-2 number, since 2×142342001² = 40522490497368002, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (142342301) 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, 7640 + ... + 18521.

It is an arithmetic number, because the mean of its divisors is an integer number (35593401).

Almost surely, 2^142342001 is an apocalyptic number.

It is an amenable number.

142342001 is a deficient number, since it is larger than the sum of its proper divisors (31603).

142342001 is an equidigital number, since it uses as much as digits as its factorization.

142342001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31602.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 142342001 is about 11930.7167010201. The cubic root of 142342001 is about 522.1288479317.

Adding to 142342001 its reverse (100243241), we get a palindrome (242585242).

The spelling of 142342001 in words is "one hundred forty-two million, three hundred forty-two thousand, one".