42703645 has 4 divisors (see below), whose sum is σ = 51244380. Its totient is φ = 34162912.

The previous prime is 42703607. The next prime is 42703649. The reversal of 42703645 is 54630724.

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

It can be written as a sum of positive squares in 2 ways, for example, as 6775609 + 35928036 = 2603^2 + 5994^2 .

It is a cyclic number.

It is not a de Polignac number, because 42703645 - 2⁷ = 42703517 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (42703649) 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, 4270360 + ... + 4270369.

It is an arithmetic number, because the mean of its divisors is an integer number (12811095).

Almost surely, 2^42703645 is an apocalyptic number.

It is an amenable number.

42703645 is a deficient number, since it is larger than the sum of its proper divisors (8540735).

42703645 is an equidigital number, since it uses as much as digits as its factorization.

42703645 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8540734.

The product of its (nonzero) digits is 20160, while the sum is 31.

The square root of 42703645 is about 6534.8025983958. The cubic root of 42703645 is about 349.5331053377.

The spelling of 42703645 in words is "forty-two million, seven hundred three thousand, six hundred forty-five".