42251237 has 8 divisors (see below), whose sum is σ = 48830400. Its totient is φ = 35807904.

The previous prime is 42251227. The next prime is 42251267. The reversal of 42251237 is 73215224.

42251237 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 42251237 - 2¹⁶ = 42185701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42251227) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 33287 + ... + 34532.

It is an arithmetic number, because the mean of its divisors is an integer number (6103800).

Almost surely, 2^42251237 is an apocalyptic number.

It is an amenable number.

42251237 is a deficient number, since it is larger than the sum of its proper divisors (6579163).

42251237 is an equidigital number, since it uses as much as digits as its factorization.

42251237 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 67915.

The product of its digits is 3360, while the sum is 26.

The square root of 42251237 is about 6500.0951531497. The cubic root of 42251237 is about 348.2943874612.

The spelling of 42251237 in words is "forty-two million, two hundred fifty-one thousand, two hundred thirty-seven".