42636746 has 8 divisors (see below), whose sum is σ = 64588644. Its totient is φ = 21107200.

The previous prime is 42636719. The next prime is 42636791. The reversal of 42636746 is 64763624.

It can be written as a sum of positive squares in 2 ways, for example, as 38576521 + 4060225 = 6211^2 + 2015^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 105335 + ... + 105738.

Almost surely, 2^42636746 is an apocalyptic number.

42636746 is a deficient number, since it is larger than the sum of its proper divisors (21951898).

42636746 is a wasteful number, since it uses less digits than its factorization.

42636746 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211176.

The product of its digits is 145152, while the sum is 38.

The square root of 42636746 is about 6529.6819218091. The cubic root of 42636746 is about 349.3504852002.

The spelling of 42636746 in words is "forty-two million, six hundred thirty-six thousand, seven hundred forty-six".