42398577 has 12 divisors (see below), whose sum is σ = 65953524. Its totient is φ = 26091360.

The previous prime is 42398567. The next prime is 42398579. The reversal of 42398577 is 77589324.

42398577 is a `hidden beast` number, since 42 + 39 + 8 + 577 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 14930496 + 27468081 = 3864^2 + 5241^2 .

It is not a de Polignac number, because 42398577 - 2⁶ = 42398513 is a prime.

It is not an unprimeable number, because it can be changed into a prime (42398579) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 181074 + ... + 181307.

It is an arithmetic number, because the mean of its divisors is an integer number (5496127).

Almost surely, 2^42398577 is an apocalyptic number.

It is an amenable number.

42398577 is a deficient number, since it is larger than the sum of its proper divisors (23554947).

42398577 is a wasteful number, since it uses less digits than its factorization.

42398577 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 362400 (or 362397 counting only the distinct ones).

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

The square root of 42398577 is about 6511.4189697792. The cubic root of 42398577 is about 348.6987792352.

The spelling of 42398577 in words is "forty-two million, three hundred ninety-eight thousand, five hundred seventy-seven".