42389743 has 4 divisors (see below), whose sum is σ = 46243368. Its totient is φ = 38536120.

The previous prime is 42389717. The next prime is 42389749. The reversal of 42389743 is 34798324.

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

It is a cyclic number.

It is not a de Polignac number, because 42389743 - 2⁹ = 42389231 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42389696 and 42389705.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42389749) 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, 1926796 + ... + 1926817.

It is an arithmetic number, because the mean of its divisors is an integer number (11560842).

Almost surely, 2^42389743 is an apocalyptic number.

42389743 is a deficient number, since it is larger than the sum of its proper divisors (3853625).

42389743 is a wasteful number, since it uses less digits than its factorization.

42389743 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3853624.

The product of its digits is 145152, while the sum is 40.

The square root of 42389743 is about 6510.7405876751. The cubic root of 42389743 is about 348.6745597197.

The spelling of 42389743 in words is "forty-two million, three hundred eighty-nine thousand, seven hundred forty-three".