42898577 has 4 divisors (see below), whose sum is σ = 44058036. Its totient is φ = 41739120.

The previous prime is 42898567. The next prime is 42898589. The reversal of 42898577 is 77589824.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 19704721 + 23193856 = 4439^2 + 4816^2 .

It is a cyclic number.

It is not a de Polignac number, because 42898577 - 2⁸ = 42898321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42898507) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 579674 + ... + 579747.

It is an arithmetic number, because the mean of its divisors is an integer number (11014509).

Almost surely, 2^42898577 is an apocalyptic number.

It is an amenable number.

42898577 is a deficient number, since it is larger than the sum of its proper divisors (1159459).

42898577 is a wasteful number, since it uses less digits than its factorization.

42898577 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1159458.

The product of its digits is 1128960, while the sum is 50.

The square root of 42898577 is about 6549.7005275051. The cubic root of 42898577 is about 350.0641433460.

It can be divided in two parts, 4289 and 8577, that multiplied together give a triangular number (36786753 = T₈₅₇₇).

The spelling of 42898577 in words is "forty-two million, eight hundred ninety-eight thousand, five hundred seventy-seven".