142553149 has 4 divisors (see below), whose sum is σ = 148751136. Its totient is φ = 136355164.

The previous prime is 142553137. The next prime is 142553171. The reversal of 142553149 is 941355241.

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: 941355241 = 197 ⋅4778453.

It is a cyclic number.

It is not a de Polignac number, because 142553149 - 2²⁵ = 108998717 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 (142553129) 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, 3098959 + ... + 3099004.

It is an arithmetic number, because the mean of its divisors is an integer number (37187784).

Almost surely, 2^142553149 is an apocalyptic number.

It is an amenable number.

142553149 is a deficient number, since it is larger than the sum of its proper divisors (6197987).

142553149 is an equidigital number, since it uses as much as digits as its factorization.

142553149 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6197986.

The product of its digits is 21600, while the sum is 34.

The square root of 142553149 is about 11939.5623454128. The cubic root of 142553149 is about 522.3868930939.

The spelling of 142553149 in words is "one hundred forty-two million, five hundred fifty-three thousand, one hundred forty-nine".