42646601 has 4 divisors (see below), whose sum is σ = 43686804. Its totient is φ = 41606400.

The previous prime is 42646589. The next prime is 42646613. The reversal of 42646601 is 10664624.

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

It is an interprime number because it is at equal distance from previous prime (42646589) and next prime (42646613).

It can be written as a sum of positive squares in 2 ways, for example, as 4206601 + 38440000 = 2051^2 + 6200^2 .

It is a cyclic number.

It is not a de Polignac number, because 42646601 - 2⁶ = 42646537 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (42646691) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 520040 + ... + 520121.

It is an arithmetic number, because the mean of its divisors is an integer number (10921701).

Almost surely, 2^42646601 is an apocalyptic number.

42646601 is a gapful number since it is divisible by the number (41) formed by its first and last digit.

42646601 is the 2921-st centered decagonal number.

It is an amenable number.

42646601 is a deficient number, since it is larger than the sum of its proper divisors (1040203).

42646601 is a wasteful number, since it uses less digits than its factorization.

42646601 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1040202.

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

The square root of 42646601 is about 6530.4365091470. The cubic root of 42646601 is about 349.3773992601.

The spelling of 42646601 in words is "forty-two million, six hundred forty-six thousand, six hundred one".