42850801523021 has 2 divisors, whose sum is σ = 42850801523022. Its totient is φ = 42850801523020.

The previous prime is 42850801523003. The next prime is 42850801523119. The reversal of 42850801523021 is 12032510805824.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39572025796900 + 3278775726121 = 6290630^2 + 1810739^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-42850801523021 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42850801523021.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42850801583021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21425400761510 + 21425400761511.

It is an arithmetic number, because the mean of its divisors is an integer number (21425400761511).

Almost surely, 2^{42850801523021} is an apocalyptic number.

It is an amenable number.

42850801523021 is a deficient number, since it is larger than the sum of its proper divisors (1).

42850801523021 is an equidigital number, since it uses as much as digits as its factorization.

42850801523021 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 153600, while the sum is 41.

The spelling of 42850801523021 in words is "forty-two trillion, eight hundred fifty billion, eight hundred one million, five hundred twenty-three thousand, twenty-one".