142540461 has 36 divisors (see below), whose sum is σ = 253608732. Its totient is φ = 76656384.

The previous prime is 142540441. The next prime is 142540471. The reversal of 142540461 is 164045241.

It can be written as a sum of positive squares in 2 ways, for example, as 38378025 + 104162436 = 6195^2 + 10206^2 .

It is not a de Polignac number, because 142540461 - 2¹⁸ = 142278317 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142540441) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 2010 + ... + 17003.

It is an arithmetic number, because the mean of its divisors is an integer number (7044687).

Almost surely, 2^142540461 is an apocalyptic number.

It is an amenable number.

142540461 is a deficient number, since it is larger than the sum of its proper divisors (111068271).

142540461 is a wasteful number, since it uses less digits than its factorization.

142540461 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19050 (or 19040 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

The square root of 142540461 is about 11939.0309908300. The cubic root of 142540461 is about 522.3713942160.

The spelling of 142540461 in words is "one hundred forty-two million, five hundred forty thousand, four hundred sixty-one".