47661142 has 4 divisors (see below), whose sum is σ = 71491716. Its totient is φ = 23830570.

The previous prime is 47661113. The next prime is 47661161. The reversal of 47661142 is 24116674.

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

It is a Smith number, since the sum of its digits (31) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11915284 + ... + 11915287.

It is an arithmetic number, because the mean of its divisors is an integer number (17872929).

Almost surely, 2^47661142 is an apocalyptic number.

47661142 is a deficient number, since it is larger than the sum of its proper divisors (23830574).

47661142 is a wasteful number, since it uses less digits than its factorization.

47661142 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23830573.

The product of its digits is 8064, while the sum is 31.

The square root of 47661142 is about 6903.7049473453. The cubic root of 47661142 is about 362.5668956211.

The spelling of 47661142 in words is "forty-seven million, six hundred sixty-one thousand, one hundred forty-two".