134140432421 has 16 divisors (see below), whose sum is σ = 143038262400. Its totient is φ = 125435262528.

The previous prime is 134140432369. The next prime is 134140432423. The reversal of 134140432421 is 124234041431.

It is a cyclic number.

It is not a de Polignac number, because 134140432421 - 2⁶ = 134140432357 is a prime.

It is a super-2 number, since 2×134140432421² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134140432423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 421535 + ... + 667811.

It is an arithmetic number, because the mean of its divisors is an integer number (8939891400).

Almost surely, 2^134140432421 is an apocalyptic number.

It is an amenable number.

134140432421 is a deficient number, since it is larger than the sum of its proper divisors (8897829979).

134140432421 is a wasteful number, since it uses less digits than its factorization.

134140432421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 246668.

The product of its (nonzero) digits is 9216, while the sum is 29.

Adding to 134140432421 its reverse (124234041431), we get a palindrome (258374473852).

The spelling of 134140432421 in words is "one hundred thirty-four billion, one hundred forty million, four hundred thirty-two thousand, four hundred twenty-one".