142306261 has 4 divisors (see below), whose sum is σ = 142400032. Its totient is φ = 142212492.

The previous prime is 142306249. The next prime is 142306279. The reversal of 142306261 is 162603241.

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.

It is a cyclic number.

It is not a de Polignac number, because 142306261 - 2¹³ = 142298069 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 (142307261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 44571 + ... + 47656.

It is an arithmetic number, because the mean of its divisors is an integer number (35600008).

Almost surely, 2^142306261 is an apocalyptic number.

It is an amenable number.

142306261 is a deficient number, since it is larger than the sum of its proper divisors (93771).

142306261 is an equidigital number, since it uses as much as digits as its factorization.

142306261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 93770.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 142306261 is about 11929.2187925279. The cubic root of 142306261 is about 522.0851446281.

The spelling of 142306261 in words is "one hundred forty-two million, three hundred six thousand, two hundred sixty-one".