42736489 has 4 divisors (see below), whose sum is σ = 43645824. Its totient is φ = 41827156.

The previous prime is 42736483. The next prime is 42736493. The reversal of 42736489 is 98463724.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 42736489 - 2⁵ = 42736457 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42736483) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 454597 + ... + 454690.

It is an arithmetic number, because the mean of its divisors is an integer number (10911456).

Almost surely, 2^42736489 is an apocalyptic number.

It is an amenable number.

42736489 is a deficient number, since it is larger than the sum of its proper divisors (909335).

42736489 is an equidigital number, since it uses as much as digits as its factorization.

42736489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 909334.

The product of its digits is 290304, while the sum is 43.

The square root of 42736489 is about 6537.3151216688. The cubic root of 42736489 is about 349.6226927208.

The spelling of 42736489 in words is "forty-two million, seven hundred thirty-six thousand, four hundred eighty-nine".