47085442 has 4 divisors (see below), whose sum is σ = 70628166. Its totient is φ = 23542720.

The previous prime is 47085421. The next prime is 47085443. The reversal of 47085442 is 24458074.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 33535681 + 13549761 = 5791^2 + 3681^2 .

It is a junction number, because it is equal to n+sod(n) for n = 47085398 and 47085407.

It is not an unprimeable number, because it can be changed into a prime (47085443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11771359 + ... + 11771362.

Almost surely, 2^47085442 is an apocalyptic number.

47085442 is a deficient number, since it is larger than the sum of its proper divisors (23542724).

47085442 is a wasteful number, since it uses less digits than its factorization.

47085442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23542723.

The product of its (nonzero) digits is 35840, while the sum is 34.

The square root of 47085442 is about 6861.8832691908. The cubic root of 47085442 is about 361.1011602535.

The spelling of 47085442 in words is "forty-seven million, eighty-five thousand, four hundred forty-two".