23421442 has 24 divisors (see below), whose sum is σ = 39165840. Its totient is φ = 10417680.

The previous prime is 23421421. The next prime is 23421443. The reversal of 23421442 is 24412432.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (22).

It is not an unprimeable number, because it can be changed into a prime (23421443) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 61609 + ... + 61987.

It is an arithmetic number, because the mean of its divisors is an integer number (1631910).

Almost surely, 2^23421442 is an apocalyptic number.

23421442 is a gapful number since it is divisible by the number (22) formed by its first and last digit.

23421442 is a deficient number, since it is larger than the sum of its proper divisors (15744398).

23421442 is a wasteful number, since it uses less digits than its factorization.

23421442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 498 (or 445 counting only the distinct ones).

The product of its digits is 1536, while the sum is 22.

The square root of 23421442 is about 4839.5704354829. The cubic root of 23421442 is about 286.1131881194.

Adding to 23421442 its reverse (24412432), we get a palindrome (47833874).

It can be divided in two parts, 234214 and 42, that added together give a 4-th power (234256 = 22⁴).

The spelling of 23421442 in words is "twenty-three million, four hundred twenty-one thousand, four hundred forty-two".