42040343 has 8 divisors (see below), whose sum is σ = 45381600. Its totient is φ = 38825248.

The previous prime is 42040321. The next prime is 42040351. The reversal of 42040343 is 34304024.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 42040343 - 2¹⁴ = 42023959 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 (42040373) 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, 30848 + ... + 32181.

It is an arithmetic number, because the mean of its divisors is an integer number (5672700).

Almost surely, 2^42040343 is an apocalyptic number.

42040343 is a deficient number, since it is larger than the sum of its proper divisors (3341257).

42040343 is a wasteful number, since it uses less digits than its factorization.

42040343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63081.

The product of its (nonzero) digits is 1152, while the sum is 20.

The square root of 42040343 is about 6483.8524813571. The cubic root of 42040343 is about 347.7139251764.

Adding to 42040343 its reverse (34304024), we get a palindrome (76344367).

The spelling of 42040343 in words is "forty-two million, forty thousand, three hundred forty-three".