123421442 has 8 divisors (see below), whose sum is σ = 187041036. Its totient is φ = 61074432.

The previous prime is 123421421. The next prime is 123421453. The reversal of 123421442 is 244124321.

It can be written as a sum of positive squares in 2 ways, for example, as 119661721 + 3759721 = 10939^2 + 1939^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 317903 + ... + 318290.

Almost surely, 2^123421442 is an apocalyptic number.

123421442 is a deficient number, since it is larger than the sum of its proper divisors (63619594).

123421442 is an equidigital number, since it uses as much as digits as its factorization.

123421442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 636292.

The product of its digits is 1536, while the sum is 23.

The square root of 123421442 is about 11109.5203316795. The cubic root of 123421442 is about 497.8863334178.

Adding to 123421442 its reverse (244124321), we get a palindrome (367545763).

The spelling of 123421442 in words is "one hundred twenty-three million, four hundred twenty-one thousand, four hundred forty-two".