142544461 has 4 divisors (see below), whose sum is σ = 146397052. Its totient is φ = 138691872.

The previous prime is 142544459. The next prime is 142544491. The reversal of 142544461 is 164445241.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 63441225 + 79103236 = 7965^2 + 8894^2 .

It is a cyclic number.

It is not a de Polignac number, because 142544461 - 2¹ = 142544459 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 (142544411) 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, 1926240 + ... + 1926313.

It is an arithmetic number, because the mean of its divisors is an integer number (36599263).

Almost surely, 2^142544461 is an apocalyptic number.

It is an amenable number.

142544461 is a deficient number, since it is larger than the sum of its proper divisors (3852591).

142544461 is an equidigital number, since it uses as much as digits as its factorization.

142544461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3852590.

The product of its digits is 15360, while the sum is 31.

The square root of 142544461 is about 11939.1985074376. The cubic root of 142544461 is about 522.3762804685.

The spelling of 142544461 in words is "one hundred forty-two million, five hundred forty-four thousand, four hundred sixty-one".