42641066 has 48 divisors (see below), whose sum is σ = 75538008. Its totient is φ = 17971200.

The previous prime is 42641063. The next prime is 42641069. The reversal of 42641066 is 66014624.

It is an interprime number because it is at equal distance from previous prime (42641063) and next prime (42641069).

It can be written as a sum of positive squares in 12 ways, for example, as 8826841 + 33814225 = 2971^2 + 5815^2 .

It is a hoax number, since the sum of its digits (29) coincides with the sum of the digits of its distinct prime factors.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (42641063) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 235496 + ... + 235676.

Almost surely, 2^42641066 is an apocalyptic number.

42641066 is a deficient number, since it is larger than the sum of its proper divisors (32896942).

42641066 is a wasteful number, since it uses less digits than its factorization.

42641066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267 (or 254 counting only the distinct ones).

The product of its (nonzero) digits is 6912, while the sum is 29.

The square root of 42641066 is about 6530.0127105542. The cubic root of 42641066 is about 349.3622836547.

It can be divided in two parts, 4264 and 1066, that multiplied together give a square (4545424 = 2132²).

The spelling of 42641066 in words is "forty-two million, six hundred forty-one thousand, sixty-six".