142385661 has 48 divisors (see below), whose sum is σ = 237740160. Its totient is φ = 84110400.

The previous prime is 142385647. The next prime is 142385687. The reversal of 142385661 is 166583241.

It is a happy number.

It is not a de Polignac number, because 142385661 - 2¹⁴ = 142369277 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 (142385261) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 133416 + ... + 134478.

It is an arithmetic number, because the mean of its divisors is an integer number (4952920).

Almost surely, 2^142385661 is an apocalyptic number.

142385661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

142385661 is a deficient number, since it is larger than the sum of its proper divisors (95354499).

142385661 is a wasteful number, since it uses less digits than its factorization.

142385661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1135 (or 1118 counting only the distinct ones).

The product of its digits is 34560, while the sum is 36.

The square root of 142385661 is about 11932.5462915507. The cubic root of 142385661 is about 522.1822259813.

The spelling of 142385661 in words is "one hundred forty-two million, three hundred eighty-five thousand, six hundred sixty-one".