4742439840 has 120 divisors (see below), whose sum is σ = 16736906340. Its totient is φ = 1264647168.

The previous prime is 4742439839. The next prime is 4742439847. The reversal of 4742439840 is 489342474.

It can be written as a sum of positive squares in 2 ways, for example, as 4565975184 + 176464656 = 67572^2 + 13284^2 .

It is a tau number, because it is divible by the number of its divisors (120).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is not an unprimeable number, because it can be changed into a prime (4742439847) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 170005 + ... + 195924.

Almost surely, 2^4742439840 is an apocalyptic number.

4742439840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4742439840 is an abundant number, since it is smaller than the sum of its proper divisors (11994466500).

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

4742439840 is a wasteful number, since it uses less digits than its factorization.

4742439840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 365956 (or 365939 counting only the distinct ones).

The product of its (nonzero) digits is 774144, while the sum is 45.

The square root of 4742439840 is about 68865.3747539357. The cubic root of 4742439840 is about 1680.0954027455.

The spelling of 4742439840 in words is "four billion, seven hundred forty-two million, four hundred thirty-nine thousand, eight hundred forty".