102342441021 has 4 divisors (see below), whose sum is σ = 136456588032. Its totient is φ = 68228294012.

The previous prime is 102342441017. The next prime is 102342441037. The reversal of 102342441021 is 120144243201.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 102342441021 - 2² = 102342441017 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 102342440982 and 102342441000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (102342441011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17057073501 + ... + 17057073506.

It is an arithmetic number, because the mean of its divisors is an integer number (34114147008).

Almost surely, 2^102342441021 is an apocalyptic number.

It is an amenable number.

102342441021 is a deficient number, since it is larger than the sum of its proper divisors (34114147011).

102342441021 is an equidigital number, since it uses as much as digits as its factorization.

102342441021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34114147010.

The product of its (nonzero) digits is 1536, while the sum is 24.

Adding to 102342441021 its reverse (120144243201), we get a palindrome (222486684222).

The spelling of 102342441021 in words is "one hundred two billion, three hundred forty-two million, four hundred forty-one thousand, twenty-one".