3142147 has 4 divisors (see below), whose sum is σ = 3147120. Its totient is φ = 3137176.

The previous prime is 3142123. The next prime is 3142157. The reversal of 3142147 is 7412413.

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 3142147 - 2⁷ = 3142019 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3142157) 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, 1372 + ... + 2857.

It is an arithmetic number, because the mean of its divisors is an integer number (786780).

Almost surely, 2^3142147 is an apocalyptic number.

3142147 is the 948-th centered heptagonal number.

3142147 is a deficient number, since it is larger than the sum of its proper divisors (4973).

3142147 is an equidigital number, since it uses as much as digits as its factorization.

3142147 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4972.

The product of its digits is 672, while the sum is 22.

The square root of 3142147 is about 1772.6102222429. The cubic root of 3142147 is about 146.4678026833.

The spelling of 3142147 in words is "three million, one hundred forty-two thousand, one hundred forty-seven".