47142477 has 24 divisors (see below), whose sum is σ = 73625760. Its totient is φ = 28965600.

The previous prime is 47142449. The next prime is 47142517. The reversal of 47142477 is 77424174.

47142477 is a `hidden beast` number, since 47 + 142 + 477 = 666.

It is not a de Polignac number, because 47142477 - 2²⁴ = 30365261 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47142437) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2602 + ... + 10052.

It is an arithmetic number, because the mean of its divisors is an integer number (3067740).

Almost surely, 2^47142477 is an apocalyptic number.

It is an amenable number.

47142477 is a deficient number, since it is larger than the sum of its proper divisors (26483283).

47142477 is a wasteful number, since it uses less digits than its factorization.

47142477 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7513 (or 7510 counting only the distinct ones).

The product of its digits is 43904, while the sum is 36.

The square root of 47142477 is about 6866.0379404719. The cubic root of 47142477 is about 361.2469030677.

The spelling of 47142477 in words is "forty-seven million, one hundred forty-two thousand, four hundred seventy-seven".