142066947 has 32 divisors (see below), whose sum is σ = 213064704. Its totient is φ = 84157920.

The previous prime is 142066937. The next prime is 142066957. The reversal of 142066947 is 749660241.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (142066937) and next prime (142066957).

It is not a de Polignac number, because 142066947 - 2²² = 137872643 is a prime.

It is a Smith number, since the sum of its digits (39) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (142066907) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 187293 + ... + 188049.

It is an arithmetic number, because the mean of its divisors is an integer number (6658272).

Almost surely, 2^142066947 is an apocalyptic number.

142066947 is a deficient number, since it is larger than the sum of its proper divisors (70997757).

142066947 is an equidigital number, since it uses as much as digits as its factorization.

142066947 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 840 (or 818 counting only the distinct ones).

The product of its (nonzero) digits is 72576, while the sum is 39.

The square root of 142066947 is about 11919.1839905255. The cubic root of 142066947 is about 521.7923198741.

The spelling of 142066947 in words is "one hundred forty-two million, sixty-six thousand, nine hundred forty-seven".