442707788036421 has 6 divisors (see below), whose sum is σ = 639466804941510. Its totient is φ = 295138525357608.

The previous prime is 442707788036387. The next prime is 442707788036467. The reversal of 442707788036421 is 124630887707244.

442707788036421 is a `hidden beast` number, since 4 + 42 + 70 + 7 + 78 + 8 + 0 + 36 + 421 = 666.

It can be written as a sum of positive squares in only one way, i.e., 273908292530625 + 168799495505796 = 16550175^2 + 12992286^2 .

It is not a de Polignac number, because 442707788036421 - 2⁶ = 442707788036357 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (442707788032421) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 24594877113126 + ... + 24594877113143.

It is an arithmetic number, because the mean of its divisors is an integer number (106577800823585).

Almost surely, 2^{442707788036421} is an apocalyptic number.

It is an amenable number.

442707788036421 is a deficient number, since it is larger than the sum of its proper divisors (196759016905089).

442707788036421 is a wasteful number, since it uses less digits than its factorization.

442707788036421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49189754226275 (or 49189754226272 counting only the distinct ones).

The product of its (nonzero) digits is 101154816, while the sum is 63.

The spelling of 442707788036421 in words is "four hundred forty-two trillion, seven hundred seven billion, seven hundred eighty-eight million, thirty-six thousand, four hundred twenty-one".