123377081 has 4 divisors (see below), whose sum is σ = 125067252. Its totient is φ = 121686912.

The previous prime is 123377063. The next prime is 123377101. The reversal of 123377081 is 180773321.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 25050025 + 98327056 = 5005^2 + 9916^2 .

It is not a de Polignac number, because 123377081 - 2⁶ = 123377017 is a prime.

It is a super-2 number, since 2×123377081² = 30443808232161122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (123377011) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 844976 + ... + 845121.

It is an arithmetic number, because the mean of its divisors is an integer number (31266813).

Almost surely, 2^123377081 is an apocalyptic number.

It is an amenable number.

123377081 is a deficient number, since it is larger than the sum of its proper divisors (1690171).

123377081 is an equidigital number, since it uses as much as digits as its factorization.

123377081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1690170.

The product of its (nonzero) digits is 7056, while the sum is 32.

The square root of 123377081 is about 11107.5236214018. The cubic root of 123377081 is about 497.8266750041.

The spelling of 123377081 in words is "one hundred twenty-three million, three hundred seventy-seven thousand, eighty-one".