42706408621 has 8 divisors (see below), whose sum is σ = 42821735744. Its totient is φ = 42591225600.

The previous prime is 42706408567. The next prime is 42706408627. The reversal of 42706408621 is 12680460724.

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 a de Polignac number, because none of the positive numbers 2^k-42706408621 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 (42706408627) 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, 571216 + ... + 641638.

It is an arithmetic number, because the mean of its divisors is an integer number (5352716968).

Almost surely, 2^42706408621 is an apocalyptic number.

It is an amenable number.

42706408621 is a deficient number, since it is larger than the sum of its proper divisors (115327123).

42706408621 is a wasteful number, since it uses less digits than its factorization.

42706408621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72051.

The product of its (nonzero) digits is 129024, while the sum is 40.

The spelling of 42706408621 in words is "forty-two billion, seven hundred six million, four hundred eight thousand, six hundred twenty-one".