2447078642 has 4 divisors (see below), whose sum is σ = 3670617966. Its totient is φ = 1223539320.

The previous prime is 2447078633. The next prime is 2447078653. The reversal of 2447078642 is 2468707442.

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

It can be written as a sum of positive squares in only one way, i.e., 2375490121 + 71588521 = 48739^2 + 8461^2 .

It is a junction number, because it is equal to n+sod(n) for n = 2447078593 and 2447078602.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 611769659 + ... + 611769662.

Almost surely, 2^2447078642 is an apocalyptic number.

2447078642 is a deficient number, since it is larger than the sum of its proper divisors (1223539324).

2447078642 is a wasteful number, since it uses less digits than its factorization.

2447078642 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1223539323.

The product of its (nonzero) digits is 602112, while the sum is 44.

The square root of 2447078642 is about 49467.9557087212. The cubic root of 2447078642 is about 1347.5637160987.

The spelling of 2447078642 in words is "two billion, four hundred forty-seven million, seventy-eight thousand, six hundred forty-two".