47777742 has 32 divisors (see below), whose sum is σ = 111763200. Its totient is φ = 15087384.

The previous prime is 47777731. The next prime is 47777749. The reversal of 47777742 is 24777774.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (47777749) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 22258 + ... + 24309.

It is an arithmetic number, because the mean of its divisors is an integer number (3492600).

Almost surely, 2^47777742 is an apocalyptic number.

47777742 is an abundant number, since it is smaller than the sum of its proper divisors (63985458).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

47777742 is a wasteful number, since it uses less digits than its factorization.

47777742 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46597 (or 46591 counting only the distinct ones).

The product of its digits is 537824, while the sum is 45.

The square root of 47777742 is about 6912.1445297389. The cubic root of 47777742 is about 362.8623205760.

The spelling of 47777742 in words is "forty-seven million, seven hundred seventy-seven thousand, seven hundred forty-two".