4142656447 has 4 divisors (see below), whose sum is σ = 4154196240. Its totient is φ = 4131116656.

The previous prime is 4142656439. The next prime is 4142656451. The reversal of 4142656447 is 7446562414.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7446562414 = 2 ⋅3723281207.

It is a cyclic number.

It is not a de Polignac number, because 4142656447 - 2³ = 4142656439 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4142656457) 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, 5769358 + ... + 5770075.

It is an arithmetic number, because the mean of its divisors is an integer number (1038549060).

Almost surely, 2^4142656447 is an apocalyptic number.

4142656447 is a deficient number, since it is larger than the sum of its proper divisors (11539793).

4142656447 is a wasteful number, since it uses less digits than its factorization.

4142656447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11539792.

The product of its digits is 645120, while the sum is 43.

The square root of 4142656447 is about 64363.4713715785. The cubic root of 4142656447 is about 1606.0521366151.

The spelling of 4142656447 in words is "four billion, one hundred forty-two million, six hundred fifty-six thousand, four hundred forty-seven".