123051979 has 2 divisors, whose sum is σ = 123051980. Its totient is φ = 123051978.

The previous prime is 123051977. The next prime is 123051983. The reversal of 123051979 is 979150321.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 123051979 - 2¹ = 123051977 is a prime.

It is a super-3 number, since 3×123051979³ (a number of 25 digits) contains 333 as substring.

Together with 123051977, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (123051977) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61525989 + 61525990.

It is an arithmetic number, because the mean of its divisors is an integer number (61525990).

Almost surely, 2^123051979 is an apocalyptic number.

123051979 is a deficient number, since it is larger than the sum of its proper divisors (1).

123051979 is an equidigital number, since it uses as much as digits as its factorization.

123051979 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17010, while the sum is 37.

The square root of 123051979 is about 11092.8796531829. The cubic root of 123051979 is about 497.3890280502.

The spelling of 123051979 in words is "one hundred twenty-three million, fifty-one thousand, nine hundred seventy-nine".