123432977 has 2 divisors, whose sum is σ = 123432978. Its totient is φ = 123432976.

The previous prime is 123432931. The next prime is 123432983. The reversal of 123432977 is 779234321.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77721856 + 45711121 = 8816^2 + 6761^2 .

It is a cyclic number.

It is not a de Polignac number, because 123432977 - 2⁶ = 123432913 is a prime.

It is a super-2 number, since 2×123432977² = 30471399622165058, which contains 22 as substring.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 123432977.

It is not a weakly prime, because it can be changed into another prime (123432077) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 61716488 + 61716489.

It is an arithmetic number, because the mean of its divisors is an integer number (61716489).

Almost surely, 2^123432977 is an apocalyptic number.

It is an amenable number.

123432977 is a deficient number, since it is larger than the sum of its proper divisors (1).

123432977 is an equidigital number, since it uses as much as digits as its factorization.

123432977 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 63504, while the sum is 38.

The square root of 123432977 is about 11110.0394688768. The cubic root of 123432977 is about 497.9018437966.

The spelling of 123432977 in words is "one hundred twenty-three million, four hundred thirty-two thousand, nine hundred seventy-seven".