42421450 has 12 divisors (see below), whose sum is σ = 78903990. Its totient is φ = 16968560.

The previous prime is 42421411. The next prime is 42421459. The reversal of 42421450 is 5412424.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 36978561 + 5442889 = 6081^2 + 2333^2 .

It is not an unprimeable number, because it can be changed into a prime (42421459) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 424165 + ... + 424264.

Almost surely, 2^42421450 is an apocalyptic number.

42421450 is a deficient number, since it is larger than the sum of its proper divisors (36482540).

42421450 is a wasteful number, since it uses less digits than its factorization.

42421450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848441 (or 848436 counting only the distinct ones).

The product of its (nonzero) digits is 1280, while the sum is 22.

The square root of 42421450 is about 6513.1751089618. The cubic root of 42421450 is about 348.7614727965.

Adding to 42421450 its reverse (5412424), we get a palindrome (47833874).

The spelling of 42421450 in words is "forty-two million, four hundred twenty-one thousand, four hundred fifty".