42498789 has 4 divisors (see below), whose sum is σ = 56665056. Its totient is φ = 28332524.

The previous prime is 42498689. The next prime is 42498791. The reversal of 42498789 is 98789424.

42498789 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 42498789 - 2¹⁶ = 42433253 is a prime.

It is a super-2 number, since 2×42498789² = 3612294132933042, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42498689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7083129 + ... + 7083134.

It is an arithmetic number, because the mean of its divisors is an integer number (14166264).

Almost surely, 2^42498789 is an apocalyptic number.

It is an amenable number.

42498789 is a deficient number, since it is larger than the sum of its proper divisors (14166267).

42498789 is a wasteful number, since it uses less digits than its factorization.

42498789 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14166266.

The product of its digits is 1161216, while the sum is 51.

The square root of 42498789 is about 6519.1095250809. The cubic root of 42498789 is about 348.9732877205.

The spelling of 42498789 in words is "forty-two million, four hundred ninety-eight thousand, seven hundred eighty-nine".