42120343 has 8 divisors (see below), whose sum is σ = 42872048. Its totient is φ = 41373504.

The previous prime is 42120301. The next prime is 42120367. The reversal of 42120343 is 34302124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42120343 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 42120343.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42120943) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 19180 + ... + 21262.

It is an arithmetic number, because the mean of its divisors is an integer number (5359006).

Almost surely, 2^42120343 is an apocalyptic number.

42120343 is a deficient number, since it is larger than the sum of its proper divisors (751705).

42120343 is a wasteful number, since it uses less digits than its factorization.

42120343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2433.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 42120343 is about 6490.0187210824. The cubic root of 42120343 is about 347.9343443100.

Adding to 42120343 its reverse (34302124), we get a palindrome (76422467).

The spelling of 42120343 in words is "forty-two million, one hundred twenty thousand, three hundred forty-three".