42426250 has 20 divisors (see below), whose sum is σ = 79526106. Its totient is φ = 16970000.

The previous prime is 42426247. The next prime is 42426253. The reversal of 42426250 is 5262424.

It is an interprime number because it is at equal distance from previous prime (42426247) and next prime (42426253).

It can be written as a sum of positive squares in 5 ways, for example, as 474721 + 41951529 = 689^2 + 6477^2 .

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 (42426253) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 15721 + ... + 18220.

Almost surely, 2^42426250 is an apocalyptic number.

42426250 is a deficient number, since it is larger than the sum of its proper divisors (37099856).

42426250 is an equidigital number, since it uses as much as digits as its factorization.

42426250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33963 (or 33948 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 25.

The square root of 42426250 is about 6513.5435824135. The cubic root of 42426250 is about 348.7746264561.

Adding to 42426250 its reverse (5262424), we get a palindrome (47688674).

The spelling of 42426250 in words is "forty-two million, four hundred twenty-six thousand, two hundred fifty".