42001250 has 20 divisors (see below), whose sum is σ = 78729486. Its totient is φ = 16800000.

The previous prime is 42001247. The next prime is 42001259. The reversal of 42001250 is 5210024.

It can be written as a sum of positive squares in 5 ways, for example, as 2399401 + 39601849 = 1549^2 + 6293^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42001259) 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, 15551 + ... + 18050.

Almost surely, 2^42001250 is an apocalyptic number.

42001250 is a deficient number, since it is larger than the sum of its proper divisors (36728236).

42001250 is an equidigital number, since it uses as much as digits as its factorization.

42001250 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33623 (or 33608 counting only the distinct ones).

The product of its (nonzero) digits is 80, while the sum is 14.

The square root of 42001250 is about 6480.8371372840. The cubic root of 42001250 is about 347.6061128936.

Adding to 42001250 its reverse (5210024), we get a palindrome (47211274).

The spelling of 42001250 in words is "forty-two million, one thousand, two hundred fifty".