142365661 has 8 divisors (see below), whose sum is σ = 144078264. Its totient is φ = 140659200.

The previous prime is 142365659. The next prime is 142365683. The reversal of 142365661 is 166563241.

It can be written as a sum of positive squares in 4 ways, for example, as 57836025 + 84529636 = 7605^2 + 9194^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 142365661 - 2¹ = 142365659 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 (142360661) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 58705 + ... + 61081.

It is an arithmetic number, because the mean of its divisors is an integer number (18009783).

Almost surely, 2^142365661 is an apocalyptic number.

It is an amenable number.

142365661 is a deficient number, since it is larger than the sum of its proper divisors (1712603).

142365661 is a wasteful number, since it uses less digits than its factorization.

142365661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3071.

The product of its digits is 25920, while the sum is 34.

The square root of 142365661 is about 11931.7082180214. The cubic root of 142365661 is about 522.1577756411.

The spelling of 142365661 in words is "one hundred forty-two million, three hundred sixty-five thousand, six hundred sixty-one".