134242002021 has 4 divisors (see below), whose sum is σ = 178989336032. Its totient is φ = 89494668012.

The previous prime is 134242001987. The next prime is 134242002049. The reversal of 134242002021 is 120200242431.

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 not a de Polignac number, because 134242002021 - 2¹¹ = 134241999973 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134242002121) 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, 22373667001 + ... + 22373667006.

It is an arithmetic number, because the mean of its divisors is an integer number (44747334008).

Almost surely, 2^134242002021 is an apocalyptic number.

It is an amenable number.

134242002021 is a deficient number, since it is larger than the sum of its proper divisors (44747334011).

134242002021 is an equidigital number, since it uses as much as digits as its factorization.

134242002021 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44747334010.

The product of its (nonzero) digits is 768, while the sum is 21.

Adding to 134242002021 its reverse (120200242431), we get a palindrome (254442244452).

The spelling of 134242002021 in words is "one hundred thirty-four billion, two hundred forty-two million, two thousand, twenty-one".