47145742 has 24 divisors (see below), whose sum is σ = 82880280. Its totient is φ = 20054160.

The previous prime is 47145737. The next prime is 47145767. The reversal of 47145742 is 24754174.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 47145698 and 47145707.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11892 + ... + 15352.

It is an arithmetic number, because the mean of its divisors is an integer number (3453345).

Almost surely, 2^47145742 is an apocalyptic number.

47145742 is a deficient number, since it is larger than the sum of its proper divisors (35734538).

47145742 is a wasteful number, since it uses less digits than its factorization.

47145742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3616 (or 3609 counting only the distinct ones).

The product of its digits is 31360, while the sum is 34.

The square root of 47145742 is about 6866.2757008439. The cubic root of 47145742 is about 361.2552426373.

The spelling of 47145742 in words is "forty-seven million, one hundred forty-five thousand, seven hundred forty-two".