47320142 has 4 divisors (see below), whose sum is σ = 70980216. Its totient is φ = 23660070.

The previous prime is 47320139. The next prime is 47320153. The reversal of 47320142 is 24102374.

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

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11830034 + ... + 11830037.

It is an arithmetic number, because the mean of its divisors is an integer number (17745054).

Almost surely, 2^47320142 is an apocalyptic number.

47320142 is a deficient number, since it is larger than the sum of its proper divisors (23660074).

47320142 is a wasteful number, since it uses less digits than its factorization.

47320142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23660073.

The product of its (nonzero) digits is 1344, while the sum is 23.

The square root of 47320142 is about 6878.9637300977. The cubic root of 47320142 is about 361.7001423942.

The spelling of 47320142 in words is "forty-seven million, three hundred twenty thousand, one hundred forty-two".