142566947 has 4 divisors (see below), whose sum is σ = 150953256. Its totient is φ = 134180640.

The previous prime is 142566917. The next prime is 142566959. The reversal of 142566947 is 749665241.

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

It is a cyclic number.

It is not a de Polignac number, because 142566947 - 2⁸ = 142566691 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 142566898 and 142566907.

It is not an unprimeable number, because it can be changed into a prime (142566917) 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, 4193129 + ... + 4193162.

It is an arithmetic number, because the mean of its divisors is an integer number (37738314).

Almost surely, 2^142566947 is an apocalyptic number.

142566947 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

142566947 is a deficient number, since it is larger than the sum of its proper divisors (8386309).

142566947 is an equidigital number, since it uses as much as digits as its factorization.

142566947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8386308.

The product of its digits is 362880, while the sum is 44.

The square root of 142566947 is about 11940.1401583064. The cubic root of 142566947 is about 522.4037468355.

The spelling of 142566947 in words is "one hundred forty-two million, five hundred sixty-six thousand, nine hundred forty-seven".