42450493 has 2 divisors, whose sum is σ = 42450494. Its totient is φ = 42450492.

The previous prime is 42450491. The next prime is 42450497. The reversal of 42450493 is 39405424.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 36942084 + 5508409 = 6078^2 + 2347^2 .

It is a cyclic number.

It is not a de Polignac number, because 42450493 - 2¹ = 42450491 is a prime.

Together with 42450491, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (42450491) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 21225246 + 21225247.

It is an arithmetic number, because the mean of its divisors is an integer number (21225247).

Almost surely, 2^42450493 is an apocalyptic number.

It is an amenable number.

42450493 is a deficient number, since it is larger than the sum of its proper divisors (1).

42450493 is an equidigital number, since it uses as much as digits as its factorization.

42450493 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17280, while the sum is 31.

The square root of 42450493 is about 6515.4042852305. The cubic root of 42450493 is about 348.8410455031.

The spelling of 42450493 in words is "forty-two million, four hundred fifty thousand, four hundred ninety-three".