42404222621 has 8 divisors (see below), whose sum is σ = 42450874488. Its totient is φ = 42357600000.

The previous prime is 42404222611. The next prime is 42404222657. The reversal of 42404222621 is 12622240424.

It can be written as a sum of positive squares in 4 ways, for example, as 8787000121 + 33617222500 = 93739^2 + 183350^2 .

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 42404222621 - 2²² = 42400028317 is a prime.

It is a Duffinian number.

42404222621 is a modest number, since divided by 222621 gives 42404 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42404222611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3994721 + ... + 4005321.

It is an arithmetic number, because the mean of its divisors is an integer number (5306359311).

Almost surely, 2^42404222621 is an apocalyptic number.

It is an amenable number.

42404222621 is a deficient number, since it is larger than the sum of its proper divisors (46651867).

42404222621 is a wasteful number, since it uses less digits than its factorization.

42404222621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14623.

The product of its (nonzero) digits is 12288, while the sum is 29.

The spelling of 42404222621 in words is "forty-two billion, four hundred four million, two hundred twenty-two thousand, six hundred twenty-one".