42424450 has 12 divisors (see below), whose sum is σ = 78909570. Its totient is φ = 16969760.

The previous prime is 42424429. The next prime is 42424451. The reversal of 42424450 is 5442424.

It is a happy number.

It can be written as a sum of positive squares in 3 ways, for example, as 38452401 + 3972049 = 6201^2 + 1993^2 .

It is a Harshad number since it is a multiple of its sum of digits (25).

It is not an unprimeable number, because it can be changed into a prime (42424451) 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, 424195 + ... + 424294.

Almost surely, 2^42424450 is an apocalyptic number.

42424450 is a deficient number, since it is larger than the sum of its proper divisors (36485120).

42424450 is a wasteful number, since it uses less digits than its factorization.

42424450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848501 (or 848496 counting only the distinct ones).

The product of its (nonzero) digits is 5120, while the sum is 25.

The square root of 42424450 is about 6513.4054073119. The cubic root of 42424450 is about 348.7696939500.

Adding to 42424450 its reverse (5442424), we get a palindrome (47866874).

The spelling of 42424450 in words is "forty-two million, four hundred twenty-four thousand, four hundred fifty".