730097138421 has 24 divisors (see below), whose sum is σ = 1209090359360. Its totient is φ = 415865451456.

The previous prime is 730097138413. The next prime is 730097138447. The reversal of 730097138421 is 124831790037.

730097138421 is a `hidden beast` number, since 7 + 3 + 0 + 0 + 97 + 138 + 421 = 666.

It is not a de Polignac number, because 730097138421 - 2³ = 730097138413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (730097138621) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 18492811 + ... + 18532248.

Almost surely, 2^730097138421 is an apocalyptic number.

It is an amenable number.

730097138421 is a deficient number, since it is larger than the sum of its proper divisors (478993220939).

730097138421 is a wasteful number, since it uses less digits than its factorization.

730097138421 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37025385 (or 37025382 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The spelling of 730097138421 in words is "seven hundred thirty billion, ninety-seven million, one hundred thirty-eight thousand, four hundred twenty-one".