8742820437 has 24 divisors (see below), whose sum is σ = 13605796568. Its totient is φ = 5377881600.

The previous prime is 8742820337. The next prime is 8742820441. The reversal of 8742820437 is 7340282478.

It can be written as a sum of positive squares in 4 ways, for example, as 78747876 + 8664072561 = 8874^2 + 93081^2 .

It is not a de Polignac number, because 8742820437 - 2⁷ = 8742820309 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 8742820392 and 8742820401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8742820487) 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, 280137 + ... + 309777.

Almost surely, 2^8742820437 is an apocalyptic number.

It is an amenable number.

8742820437 is a deficient number, since it is larger than the sum of its proper divisors (4862976131).

8742820437 is a wasteful number, since it uses less digits than its factorization.

8742820437 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32181 (or 32178 counting only the distinct ones).

The product of its (nonzero) digits is 602112, while the sum is 45.

The square root of 8742820437 is about 93503.0504154811. The cubic root of 8742820437 is about 2060.0788951623.

The spelling of 8742820437 in words is "eight billion, seven hundred forty-two million, eight hundred twenty thousand, four hundred thirty-seven".