134937940921 has 27 divisors (see below), whose sum is σ = 158897250477. Its totient is φ = 114257122560.

The previous prime is 134937940919. The next prime is 134937940927. The reversal of 134937940921 is 129049739431.

The square root of 134937940921 is 367339.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 3195075625 + 131742865296 = 56525^2 + 362964^2 .

It is not a de Polignac number, because 134937940921 - 2¹ = 134937940919 is a prime.

It is not an unprimeable number, because it can be changed into a prime (134937940927) by changing a digit.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 249422911 + ... + 249423451.

It is an arithmetic number, because the mean of its divisors is an integer number (5885083351).

Almost surely, 2^134937940921 is an apocalyptic number.

134937940921 is the 367339-th square number.

134937940921 is the 183670-th centered octagonal number.

It is an amenable number.

134937940921 is a deficient number, since it is larger than the sum of its proper divisors (23959309556).

134937940921 is an frugal number, since it uses more digits than its factorization.

134937940921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1290 (or 645 counting only the distinct ones).

The product of its (nonzero) digits is 1469664, while the sum is 52.

The spelling of 134937940921 in words is "one hundred thirty-four billion, nine hundred thirty-seven million, nine hundred forty thousand, nine hundred twenty-one".