42577489 has 4 divisors (see below), whose sum is σ = 42902640. Its totient is φ = 42252340.

The previous prime is 42577453. The next prime is 42577501. The reversal of 42577489 is 98477524.

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 42577489 - 2²¹ = 40480337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42577429) 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, 162379 + ... + 162640.

It is an arithmetic number, because the mean of its divisors is an integer number (10725660).

Almost surely, 2^42577489 is an apocalyptic number.

It is an amenable number.

42577489 is a deficient number, since it is larger than the sum of its proper divisors (325151).

42577489 is a wasteful number, since it uses less digits than its factorization.

42577489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 325150.

The product of its digits is 564480, while the sum is 46.

The square root of 42577489 is about 6525.1428336857. The cubic root of 42577489 is about 349.1885664999.

The spelling of 42577489 in words is "forty-two million, five hundred seventy-seven thousand, four hundred eighty-nine".