3142478 has 4 divisors (see below), whose sum is σ = 4713720. Its totient is φ = 1571238.

The previous prime is 3142459. The next prime is 3142481. The reversal of 3142478 is 8742413.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 8742413 = 19 ⋅460127.

It is a self number, because there is not a number n which added to its sum of digits gives 3142478.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 785618 + ... + 785621.

It is an arithmetic number, because the mean of its divisors is an integer number (1178430).

Almost surely, 2^3142478 is an apocalyptic number.

3142478 is a deficient number, since it is larger than the sum of its proper divisors (1571242).

3142478 is a wasteful number, since it uses less digits than its factorization.

3142478 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1571241.

The product of its digits is 5376, while the sum is 29.

The square root of 3142478 is about 1772.7035849233. The cubic root of 3142478 is about 146.4729455724.

The spelling of 3142478 in words is "three million, one hundred forty-two thousand, four hundred seventy-eight".