42036646 has 4 divisors (see below), whose sum is σ = 63054972. Its totient is φ = 21018322.

The previous prime is 42036641. The next prime is 42036647. The reversal of 42036646 is 64663024.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42036641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10509160 + ... + 10509163.

It is an arithmetic number, because the mean of its divisors is an integer number (15763743).

Almost surely, 2^42036646 is an apocalyptic number.

42036646 is a deficient number, since it is larger than the sum of its proper divisors (21018326).

42036646 is a wasteful number, since it uses less digits than its factorization.

42036646 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21018325.

The product of its (nonzero) digits is 20736, while the sum is 31.

The square root of 42036646 is about 6483.5673822364. The cubic root of 42036646 is about 347.7037323000.

The spelling of 42036646 in words is "forty-two million, thirty-six thousand, six hundred forty-six".