42351621343 has 8 divisors (see below), whose sum is σ = 44211115008. Its totient is φ = 40493637624.

The previous prime is 42351621287. The next prime is 42351621383. The reversal of 42351621343 is 34312615324.

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 42351621343 - 2²⁵ = 42318066911 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 42351621299 and 42351621308.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42351621383) 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, 319971 + ... + 432532.

It is an arithmetic number, because the mean of its divisors is an integer number (5526389376).

Almost surely, 2^42351621343 is an apocalyptic number.

42351621343 is a deficient number, since it is larger than the sum of its proper divisors (1859493665).

42351621343 is a wasteful number, since it uses less digits than its factorization.

42351621343 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 754973.

The product of its digits is 51840, while the sum is 34.

The spelling of 42351621343 in words is "forty-two billion, three hundred fifty-one million, six hundred twenty-one thousand, three hundred forty-three".