42258437 has 8 divisors (see below), whose sum is σ = 46368504. Its totient is φ = 38271168.

The previous prime is 42258431. The next prime is 42258457. The reversal of 42258437 is 73485224.

It can be written as a sum of positive squares in 4 ways, for example, as 14737921 + 27520516 = 3839^2 + 5246^2 .

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

It is not a de Polignac number, because 42258437 - 2¹² = 42254341 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 42258397 and 42258406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42258431) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 29978 + ... + 31355.

It is an arithmetic number, because the mean of its divisors is an integer number (5796063).

Almost surely, 2^42258437 is an apocalyptic number.

It is an amenable number.

42258437 is a deficient number, since it is larger than the sum of its proper divisors (4110067).

42258437 is a wasteful number, since it uses less digits than its factorization.

42258437 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 61399.

The product of its digits is 53760, while the sum is 35.

The square root of 42258437 is about 6500.6489676032. The cubic root of 42258437 is about 348.3141705282.

The spelling of 42258437 in words is "forty-two million, two hundred fifty-eight thousand, four hundred thirty-seven".