123020293 has 4 divisors (see below), whose sum is σ = 134203968. Its totient is φ = 111836620.

The previous prime is 123020273. The next prime is 123020309. The reversal of 123020293 is 392020321.

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.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-123020293 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 (123020203) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5591821 + ... + 5591842.

It is an arithmetic number, because the mean of its divisors is an integer number (33550992).

Almost surely, 2^123020293 is an apocalyptic number.

It is an amenable number.

123020293 is a deficient number, since it is larger than the sum of its proper divisors (11183675).

123020293 is a wasteful number, since it uses less digits than its factorization.

123020293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11183674.

The product of its (nonzero) digits is 648, while the sum is 22.

The square root of 123020293 is about 11091.4513477723. The cubic root of 123020293 is about 497.3463316715.

The spelling of 123020293 in words is "one hundred twenty-three million, twenty thousand, two hundred ninety-three".