123157093 has 2 divisors, whose sum is σ = 123157094. Its totient is φ = 123157092.

The previous prime is 123157091. The next prime is 123157207. The reversal of 123157093 is 390751321.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 104898564 + 18258529 = 10242^2 + 4273^2 .

It is a cyclic number.

It is not a de Polignac number, because 123157093 - 2¹ = 123157091 is a prime.

Together with 123157091, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (123157091) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61578546 + 61578547.

It is an arithmetic number, because the mean of its divisors is an integer number (61578547).

Almost surely, 2^123157093 is an apocalyptic number.

It is an amenable number.

123157093 is a deficient number, since it is larger than the sum of its proper divisors (1).

123157093 is an equidigital number, since it uses as much as digits as its factorization.

123157093 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5670, while the sum is 31.

The square root of 123157093 is about 11097.6165459075. The cubic root of 123157093 is about 497.5306150196.

The spelling of 123157093 in words is "one hundred twenty-three million, one hundred fifty-seven thousand, ninety-three".