102042441000021 has 32 divisors (see below), whose sum is σ = 146686320506880. Its totient is φ = 62865564638976.

The previous prime is 102042440999981. The next prime is 102042441000029. The reversal of 102042441000021 is 120000144240201.

It is not a de Polignac number, because 102042441000021 - 2²² = 102042436805717 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102042441000029) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 47588061 + ... + 49686098.

It is an arithmetic number, because the mean of its divisors is an integer number (4583947515840).

Almost surely, 2^{102042441000021} is an apocalyptic number.

It is an amenable number.

102042441000021 is a deficient number, since it is larger than the sum of its proper divisors (44643879506859).

102042441000021 is a wasteful number, since it uses less digits than its factorization.

102042441000021 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 97274553.

The product of its (nonzero) digits is 512, while the sum is 21.

Adding to 102042441000021 its reverse (120000144240201), we get a palindrome (222042585240222).

The spelling of 102042441000021 in words is "one hundred two trillion, forty-two billion, four hundred forty-one million, twenty-one", and thus it is an aban number.