42389311 has 4 divisors (see below), whose sum is σ = 42404824. Its totient is φ = 42373800.

The previous prime is 42389297. The next prime is 42389339. The reversal of 42389311 is 11398324.

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-42389311 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42329311) 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, 2445 + ... + 9526.

It is an arithmetic number, because the mean of its divisors is an integer number (10601206).

Almost surely, 2^42389311 is an apocalyptic number.

42389311 is a deficient number, since it is larger than the sum of its proper divisors (15513).

42389311 is a wasteful number, since it uses less digits than its factorization.

42389311 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15512.

The product of its digits is 5184, while the sum is 31.

The square root of 42389311 is about 6510.7074116412. The cubic root of 42389311 is about 348.6733752514.

The spelling of 42389311 in words is "forty-two million, three hundred eighty-nine thousand, three hundred eleven".