123377643 has 12 divisors (see below), whose sum is σ = 178993360. Its totient is φ = 81891216.

The previous prime is 123377603. The next prime is 123377663. The reversal of 123377643 is 346773321.

123377643 is a `hidden beast` number, since 1 + 2 + 3 + 3 + 7 + 7 + 643 = 666.

It is not a de Polignac number, because 123377643 - 2¹⁶ = 123312107 is a prime.

It is a Duffinian number.

It is a plaindrome in base 14.

It is a junction number, because it is equal to n+sod(n) for n = 123377598 and 123377607.

It is not an unprimeable number, because it can be changed into a prime (123377603) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27871 + ... + 31992.

Almost surely, 2^123377643 is an apocalyptic number.

123377643 is a deficient number, since it is larger than the sum of its proper divisors (55615717).

123377643 is a wasteful number, since it uses less digits than its factorization.

123377643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 60098 (or 60095 counting only the distinct ones).

The product of its digits is 63504, while the sum is 36.

The square root of 123377643 is about 11107.5489195412. The cubic root of 123377643 is about 497.8274308932.

The spelling of 123377643 in words is "one hundred twenty-three million, three hundred seventy-seven thousand, six hundred forty-three".