134021454251 has 4 divisors (see below), whose sum is σ = 134796144912. Its totient is φ = 133246763592.

The previous prime is 134021454239. The next prime is 134021454257. The reversal of 134021454251 is 152454120431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 152454120431 = 36383 ⋅4190257.

It is a cyclic number.

It is not a de Polignac number, because 134021454251 - 2⁶ = 134021454187 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (134021454257) 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, 387345071 + ... + 387345416.

It is an arithmetic number, because the mean of its divisors is an integer number (33699036228).

Almost surely, 2^134021454251 is an apocalyptic number.

134021454251 is a deficient number, since it is larger than the sum of its proper divisors (774690661).

134021454251 is an equidigital number, since it uses as much as digits as its factorization.

134021454251 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 774690660.

The product of its (nonzero) digits is 19200, while the sum is 32.

Adding to 134021454251 its reverse (152454120431), we get a palindrome (286475574682).

The spelling of 134021454251 in words is "one hundred thirty-four billion, twenty-one million, four hundred fifty-four thousand, two hundred fifty-one".