42746822621 has 8 divisors (see below), whose sum is σ = 43226284920. Its totient is φ = 42268151808.

The previous prime is 42746822617. The next prime is 42746822639. The reversal of 42746822621 is 12622864724.

It can be written as a sum of positive squares in 4 ways, for example, as 4901400100 + 37845422521 = 70010^2 + 194539^2 .

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 42746822621 - 2² = 42746822617 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 (42746822641) 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, 88916 + ... + 305613.

It is an arithmetic number, because the mean of its divisors is an integer number (5403285615).

Almost surely, 2^42746822621 is an apocalyptic number.

It is an amenable number.

42746822621 is a deficient number, since it is larger than the sum of its proper divisors (479462299).

42746822621 is a wasteful number, since it uses less digits than its factorization.

42746822621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 395743.

The product of its digits is 516096, while the sum is 44.

The spelling of 42746822621 in words is "forty-two billion, seven hundred forty-six million, eight hundred twenty-two thousand, six hundred twenty-one".