137049507421 has 8 divisors (see below), whose sum is σ = 140606739680.
Its totient is φ = 133509094992.
The previous prime is 137049507383. The next prime is 137049507437. The reversal of 137049507421 is 124705940731.
It is a sphenic number, since it is the product of 3 distinct primes.
It is a cyclic number.
It is not a de Polignac number, because 137049507421 - 27 = 137049507293 is a prime.
It is a Harshad number since it is a multiple of its sum of digits (43).
It is a Duffinian number.
It is a congruent number.
It is not an unprimeable number, because it can be changed into a prime (137049507481) by changing a digit.
It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4188450 + ... + 4221043.
It is an arithmetic number, because the mean of its divisors is an integer number (17575842460).
Almost surely, 2137049507421 is an apocalyptic number.
It is an amenable number.
137049507421 is a deficient number, since it is larger than the sum of its proper divisors (3557232259).
137049507421 is an equidigital number, since it uses as much as digits as its factorization.
137049507421 is an odious number, because the sum of its binary digits is odd.
The sum of its prime factors is 8409915.
The product of its (nonzero) digits is 211680, while the sum is 43.
The spelling of 137049507421 in words is "one hundred thirty-seven billion, forty-nine million, five hundred seven thousand, four hundred twenty-one".