42451422 has 32 divisors (see below), whose sum is σ = 95413248. Its totient is φ = 12493536.

The previous prime is 42451421. The next prime is 42451439. The reversal of 42451422 is 22415424.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 42451392 and 42451401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42451421) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 10038 + ... + 13625.

It is an arithmetic number, because the mean of its divisors is an integer number (2981664).

Almost surely, 2^42451422 is an apocalyptic number.

42451422 is an abundant number, since it is smaller than the sum of its proper divisors (52961826).

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

42451422 is a wasteful number, since it uses less digits than its factorization.

42451422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23704.

The product of its digits is 2560, while the sum is 24.

The square root of 42451422 is about 6515.4755774233. The cubic root of 42451422 is about 348.8435902004.

Adding to 42451422 its reverse (22415424), we get a palindrome (64866846).

The spelling of 42451422 in words is "forty-two million, four hundred fifty-one thousand, four hundred twenty-two".