42121020134 has 8 divisors (see below), whose sum is σ = 63183061368. Its totient is φ = 21059999680.

The previous prime is 42121020131. The next prime is 42121020157. The reversal of 42121020134 is 43102012124.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42121020131) 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, 141992 + ... + 323115.

It is an arithmetic number, because the mean of its divisors is an integer number (7897882671).

Almost surely, 2^42121020134 is an apocalyptic number.

42121020134 is a deficient number, since it is larger than the sum of its proper divisors (21062041234).

42121020134 is a wasteful number, since it uses less digits than its factorization.

42121020134 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 510390.

The product of its (nonzero) digits is 384, while the sum is 20.

Adding to 42121020134 its reverse (43102012124), we get a palindrome (85223032258).

The spelling of 42121020134 in words is "forty-two billion, one hundred twenty-one million, twenty thousand, one hundred thirty-four".