142486261 has 4 divisors (see below), whose sum is σ = 147082624. Its totient is φ = 137889900.

The previous prime is 142486249. The next prime is 142486271. The reversal of 142486261 is 162684241.

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: 162684241 = 67 ⋅2428123.

It is a cyclic number.

It is not a de Polignac number, because 142486261 - 2¹³ = 142478069 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 (142486271) 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, 2298135 + ... + 2298196.

It is an arithmetic number, because the mean of its divisors is an integer number (36770656).

Almost surely, 2^142486261 is an apocalyptic number.

It is an amenable number.

142486261 is a deficient number, since it is larger than the sum of its proper divisors (4596363).

142486261 is an equidigital number, since it uses as much as digits as its factorization.

142486261 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4596362.

The product of its digits is 18432, while the sum is 34.

The square root of 142486261 is about 11936.7609090574. The cubic root of 142486261 is about 522.3051764823.

The spelling of 142486261 in words is "one hundred forty-two million, four hundred eighty-six thousand, two hundred sixty-one".