30792121 has 4 divisors (see below), whose sum is σ = 30805632. Its totient is φ = 30778612.

The previous prime is 30792059. The next prime is 30792127. The reversal of 30792121 is 12129703.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 12129703 = 83 ⋅146141.

It is a cyclic number.

It is not a de Polignac number, because 30792121 - 2¹⁹ = 30267833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (30792127) 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, 2401 + ... + 8206.

It is an arithmetic number, because the mean of its divisors is an integer number (7701408).

Almost surely, 2^30792121 is an apocalyptic number.

It is an amenable number.

30792121 is a deficient number, since it is larger than the sum of its proper divisors (13511).

30792121 is a wasteful number, since it uses less digits than its factorization.

30792121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13510.

The product of its (nonzero) digits is 756, while the sum is 25.

The square root of 30792121 is about 5549.0648761751. The cubic root of 30792121 is about 313.4343101692.

The spelling of 30792121 in words is "thirty million, seven hundred ninety-two thousand, one hundred twenty-one".