42240021343 has 16 divisors (see below), whose sum is σ = 46612119456. Its totient is φ = 38028879360.

The previous prime is 42240021331. The next prime is 42240021347. The reversal of 42240021343 is 34312004224.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 42240021343 - 2⁹ = 42240020831 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 (42240021347) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2281080 + ... + 2299522.

It is an arithmetic number, because the mean of its divisors is an integer number (2913257466).

Almost surely, 2^42240021343 is an apocalyptic number.

42240021343 is a deficient number, since it is larger than the sum of its proper divisors (4372098113).

42240021343 is a wasteful number, since it uses less digits than its factorization.

42240021343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22794.

The product of its (nonzero) digits is 4608, while the sum is 25.

Adding to 42240021343 its reverse (34312004224), we get a palindrome (76552025567).

The spelling of 42240021343 in words is "forty-two billion, two hundred forty million, twenty-one thousand, three hundred forty-three".