123421055701 has 4 divisors (see below), whose sum is σ = 123544849132. Its totient is φ = 123297262272.

The previous prime is 123421055669. The next prime is 123421055729. The reversal of 123421055701 is 107550124321.

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 58770365476 + 64650690225 = 242426^2 + 254265^2 .

It is a cyclic number.

It is not a de Polignac number, because 123421055701 - 2⁵ = 123421055669 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123421055761) 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, 61895220 + ... + 61897213.

It is an arithmetic number, because the mean of its divisors is an integer number (30886212283).

Almost surely, 2^123421055701 is an apocalyptic number.

It is an amenable number.

123421055701 is a deficient number, since it is larger than the sum of its proper divisors (123793431).

123421055701 is an equidigital number, since it uses as much as digits as its factorization.

123421055701 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 123793430.

The product of its (nonzero) digits is 8400, while the sum is 31.

The spelling of 123421055701 in words is "one hundred twenty-three billion, four hundred twenty-one million, fifty-five thousand, seven hundred one".