47142305 has 16 divisors (see below), whose sum is σ = 65541504. Its totient is φ = 31881600.

The previous prime is 47142301. The next prime is 47142307. The reversal of 47142305 is 50324174.

It is not a de Polignac number, because 47142305 - 2² = 47142301 is a prime.

It is not an unprimeable number, because it can be changed into a prime (47142301) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6671 + ... + 11780.

It is an arithmetic number, because the mean of its divisors is an integer number (4096344).

Almost surely, 2^47142305 is an apocalyptic number.

It is an amenable number.

47142305 is a deficient number, since it is larger than the sum of its proper divisors (18399199).

47142305 is a wasteful number, since it uses less digits than its factorization.

47142305 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18536.

The product of its (nonzero) digits is 3360, while the sum is 26.

The square root of 47142305 is about 6866.0254150418. The cubic root of 47142305 is about 361.2464637290.

Adding to 47142305 its reverse (50324174), we get a palindrome (97466479).

The spelling of 47142305 in words is "forty-seven million, one hundred forty-two thousand, three hundred five".