42789537 has 24 divisors (see below), whose sum is σ = 70848960. Its totient is φ = 24377760.

The previous prime is 42789521. The next prime is 42789547. The reversal of 42789537 is 73598724.

42789537 is a `hidden beast` number, since 42 + 78 + 9 + 537 = 666.

It is not a de Polignac number, because 42789537 - 2⁴ = 42789521 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42789492 and 42789501.

It is not an unprimeable number, because it can be changed into a prime (42789547) 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, 25587 + ... + 27207.

It is an arithmetic number, because the mean of its divisors is an integer number (2952040).

Almost surely, 2^42789537 is an apocalyptic number.

It is an amenable number.

42789537 is a deficient number, since it is larger than the sum of its proper divisors (28059423).

42789537 is a wasteful number, since it uses less digits than its factorization.

42789537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2053 (or 2050 counting only the distinct ones).

The product of its digits is 423360, while the sum is 45.

The square root of 42789537 is about 6541.3711865327. The cubic root of 42789537 is about 349.7672929317.

The spelling of 42789537 in words is "forty-two million, seven hundred eighty-nine thousand, five hundred thirty-seven".