42254066 has 4 divisors (see below), whose sum is σ = 63381102. Its totient is φ = 21127032.

The previous prime is 42254063. The next prime is 42254077. The reversal of 42254066 is 66045224.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 38700841 + 3553225 = 6221^2 + 1885^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42254063) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10563515 + ... + 10563518.

Almost surely, 2^42254066 is an apocalyptic number.

42254066 is a deficient number, since it is larger than the sum of its proper divisors (21127036).

42254066 is a wasteful number, since it uses less digits than its factorization.

42254066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21127035.

The product of its (nonzero) digits is 11520, while the sum is 29.

The square root of 42254066 is about 6500.3127617062. The cubic root of 42254066 is about 348.3021608259.

The spelling of 42254066 in words is "forty-two million, two hundred fifty-four thousand, sixty-six".