142693661 has 8 divisors (see below), whose sum is σ = 155758944. Its totient is φ = 129643920.

The previous prime is 142693613. The next prime is 142693669. The reversal of 142693661 is 166396241.

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 142693661 - 2¹⁰ = 142692637 is a prime.

It is a super-2 number, since 2×142693661² = 40722961779165842, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (142693669) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 24146 + ... + 29468.

It is an arithmetic number, because the mean of its divisors is an integer number (19469868).

Almost surely, 2^142693661 is an apocalyptic number.

142693661 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

142693661 is a deficient number, since it is larger than the sum of its proper divisors (13065283).

142693661 is a wasteful number, since it uses less digits than its factorization.

142693661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7771.

The product of its digits is 46656, while the sum is 38.

The square root of 142693661 is about 11945.4451989032. The cubic root of 142693661 is about 522.5584724287.

The spelling of 142693661 in words is "one hundred forty-two million, six hundred ninety-three thousand, six hundred sixty-one".