42838499 has 4 divisors (see below), whose sum is σ = 46732920. Its totient is φ = 38944080.

The previous prime is 42838493. The next prime is 42838507. The reversal of 42838499 is 99483824.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42838499 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42838493) 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, 1947194 + ... + 1947215.

It is an arithmetic number, because the mean of its divisors is an integer number (11683230).

Almost surely, 2^42838499 is an apocalyptic number.

42838499 is a deficient number, since it is larger than the sum of its proper divisors (3894421).

42838499 is a wasteful number, since it uses less digits than its factorization.

42838499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3894420.

The product of its digits is 497664, while the sum is 47.

The square root of 42838499 is about 6545.1126040734. The cubic root of 42838499 is about 349.9006493521.

The spelling of 42838499 in words is "forty-two million, eight hundred thirty-eight thousand, four hundred ninety-nine".