42250457 has 8 divisors (see below), whose sum is σ = 44857800. Its totient is φ = 39656704.

The previous prime is 42250447. The next prime is 42250463. The reversal of 42250457 is 75405224.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 52441 + 42198016 = 229^2 + 6496^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 42250457 - 2²² = 38056153 is a prime.

It is a super-2 number, since 2×42250457² = 3570202233417698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42250447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3419 + ... + 9807.

It is an arithmetic number, because the mean of its divisors is an integer number (5607225).

Almost surely, 2^42250457 is an apocalyptic number.

It is an amenable number.

42250457 is a deficient number, since it is larger than the sum of its proper divisors (2607343).

42250457 is a wasteful number, since it uses less digits than its factorization.

42250457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6795.

The product of its (nonzero) digits is 11200, while the sum is 29.

The square root of 42250457 is about 6500.0351537511. The cubic root of 42250457 is about 348.2922441607.

The spelling of 42250457 in words is "forty-two million, two hundred fifty thousand, four hundred fifty-seven".