23401242 has 48 divisors (see below), whose sum is σ = 53405352. Its totient is φ = 7395840.

The previous prime is 23401211. The next prime is 23401267. The reversal of 23401242 is 24210432.

23401242 is a `hidden beast` number, since 23 + 401 + 242 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 22553001 + 848241 = 4749^2 + 921^2 .

It is a Harshad number since it is a multiple of its sum of digits (18).

It is a plaindrome in base 11.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 26878 + ... + 27734.

Almost surely, 2^23401242 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 23401242, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26702676).

23401242 is an abundant number, since it is smaller than the sum of its proper divisors (30004110).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

23401242 is a wasteful number, since it uses less digits than its factorization.

23401242 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 943 (or 940 counting only the distinct ones).

The product of its (nonzero) digits is 384, while the sum is 18.

The square root of 23401242 is about 4837.4830232260. The cubic root of 23401242 is about 286.0309109662.

Adding to 23401242 its reverse (24210432), we get a palindrome (47611674).

The spelling of 23401242 in words is "twenty-three million, four hundred one thousand, two hundred forty-two".