123420413 has 4 divisors (see below), whose sum is σ = 123573408. Its totient is φ = 123267420.

The previous prime is 123420403. The next prime is 123420431. The reversal of 123420413 is 314024321.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 123420413 - 2¹² = 123416317 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (123420403) 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, 75281 + ... + 76902.

It is an arithmetic number, because the mean of its divisors is an integer number (30893352).

Almost surely, 2^123420413 is an apocalyptic number.

It is an amenable number.

123420413 is a deficient number, since it is larger than the sum of its proper divisors (152995).

123420413 is an equidigital number, since it uses as much as digits as its factorization.

123420413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 152994.

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 123420413 is about 11109.4740199525. The cubic root of 123420413 is about 497.8849497402.

Adding to 123420413 its reverse (314024321), we get a palindrome (437444734).

The spelling of 123420413 in words is "one hundred twenty-three million, four hundred twenty thousand, four hundred thirteen".