47142722 has 16 divisors (see below), whose sum is σ = 78231744. Its totient is φ = 21126000.

The previous prime is 47142703. The next prime is 47142727. The reversal of 47142722 is 22724174.

It is not an unprimeable number, because it can be changed into a prime (47142727) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13529 + ... + 16652.

It is an arithmetic number, because the mean of its divisors is an integer number (4889484).

Almost surely, 2^47142722 is an apocalyptic number.

47142722 is a deficient number, since it is larger than the sum of its proper divisors (31089022).

47142722 is a wasteful number, since it uses less digits than its factorization.

47142722 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30265.

The product of its digits is 6272, while the sum is 29.

The square root of 47142722 is about 6866.0557818882. The cubic root of 47142722 is about 361.2475288680.

Adding to 47142722 its reverse (22724174), we get a palindrome (69866896).

The spelling of 47142722 in words is "forty-seven million, one hundred forty-two thousand, seven hundred twenty-two".