42252237 has 6 divisors (see below), whose sum is σ = 61031022. Its totient is φ = 28168152.

The previous prime is 42252227. The next prime is 42252269. The reversal of 42252237 is 73225224.

42252237 is a `hidden beast` number, since 422 + 5 + 2 + 237 = 666.

It can be written as a sum of positive squares in only one way, i.e., 42068196 + 184041 = 6486^2 + 429^2 .

It is not a de Polignac number, because 42252237 - 2⁷ = 42252109 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 42252237.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42252227) 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, 2347338 + ... + 2347355.

It is an arithmetic number, because the mean of its divisors is an integer number (10171837).

Almost surely, 2^42252237 is an apocalyptic number.

It is an amenable number.

42252237 is a deficient number, since it is larger than the sum of its proper divisors (18778785).

42252237 is a wasteful number, since it uses less digits than its factorization.

42252237 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4694699 (or 4694696 counting only the distinct ones).

The product of its digits is 6720, while the sum is 27.

The square root of 42252237 is about 6500.1720746454. The cubic root of 42252237 is about 348.2971352438.

The spelling of 42252237 in words is "forty-two million, two hundred fifty-two thousand, two hundred thirty-seven".